多余的,的英语单词是什么呢?要adj

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Sinceever 共回答了19个问题 | 采纳率89.5%
edundant
superfluous
excrescent
needless
spare
全为 多余的 形容词
1年前
wolailetz 共回答了1860个问题 | 采纳率
redundant
superfluous
unwanted
1年前
yanshuang327 共回答了40个问题 | 采纳率
spare redundant needless
1年前

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从方框中选择适当的选
从方框中选择适当的选项填人短文中,使短文通顺、完整.选项中有两个选项是多余选项.
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根据短文内容, 从下框A~F选项中选出能概括每段主题的最佳选项,并在答题卡上将该选项涂黑。选项中有一项为多余项。
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4、5相差1,8、10相差2,16、19相差3,32、36相差4;
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后两个数字的第一个数是前两个数字第一个数的两倍,
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实验室里可按下图所示的装置来干燥、收集气体R,多余的气体R可用水吸收,则R是 (
实验室里可按下图所示的装置来干燥、收集气体R,多余的气体R可用水吸收,则R是 ()
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D

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实验室可用如图所示装置干燥(碱石灰是氢氧化钠和生石灰的混合物)、收集气体R,并吸收多余的R,则R可能是(  )
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解题思路:可以根据图中信息进行分析、判断,从而得出正确的结论.碱石灰的主要成分是氧化钙和固体氢氧化钠,不能干燥酸性气体;收集方法适合气体的密度比空气小,尾气处理说明气体极易溶于水,据此即可解答.

A、二氧化碳能与碱石灰反应,不能被碱石灰干燥,故A错误;
B、氨气易溶于水,碱石灰可以干燥氨气,且密度比空气小,故B正确;
C、碱石灰能干燥一氧化碳,但是一氧化碳难溶于水,不能通过水吸收,故C错误;
D、二氧化硫能与碱石灰反应,不能被碱石灰干燥,故D错误;
故选B.

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本题考点: 根据浓硫酸或烧碱的性质确定所能干燥的气体;常用气体的收集方法.

考点点评: 本题考查实验装置的选择,解答本题时既要考虑物质的水溶性,又要考虑气体是否能和干燥剂发生化学反应,完成此题,可以依据物质的性质进行,题目难度不大.

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根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 注意:请将答案转写到答题卡上,写在本试卷上无效。 (e="ab," f=ac,g=ad)
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star in, thanks to, be likely , pick out, more than, be set in, devote oneself to
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小题7:固定词组watch out for注意。。。当心…指 当心危险的雨
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小题9:be patient with对…有耐心。指你要对婴儿有耐心。
小题10:are greedy for渴望得到…指我们渴望得到的是知识,不是钱。
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in at by for with on to
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We re going to swim < > the sea
She ll go to school < > her sister
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翻译英语,急用
我家住在一个远离城市的小村庄,大约有1000人住在村子里.20年前,人们生活艰辛,没有足够的食物,没有多余的钱送孩子上学,连去一趟城里都很难,可最近10年里,我们村庄的生活有了翻天覆地的变化,越来越多的学校,马路,汽车,电话,等为人们提供了便利的生活,我们的生活越来越好.
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阅读理解.根据短 阅读理解.根据短文内容,从下框的A~F选项中的选出能概括每一段主题的最佳选项,选项中有一项为多余项.
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阅读理解.
根据短文内容,从下框的A~F选项中的选出能概括每一段主题的最佳选项,选项中有一项为多余项.
A.Heat food thoroughly
B.Store food properly
C.Cook food thoroughly
D.Serve food safely
E.Prepare food safely
F.Shop smartly
1.( )
Prevention food poisoning starts with your trip to the supermarket.Pick up your packaged and canned
foods first.Buy cans and jars that look perfect.Look for any expiration dates on the labels and never buy
outdated food.Likewise,check the"use by" or"sell by" date on dairy products such as cottage cheese,cream
cheese,yogurt,and sour cream and pick the ones that will stay fresh longest in your refrigerator.
2.( )
After shopping,get home as soon as you can.Then put food into the refrigerator or freezer right away.
Make sure to set the refrigerator temperature to 40℉ and the freezer to 0℉.Check temperatures with a
thermometer.Place raw meat and seafood in containers in the refrigerator to prevent their juices from dripping
on other foods.Eggs always go in the refrigerator.
3.( )
Wash hands and surfaces often.Bacteria can be spread throughout the kitchen and get onto cutting boards
and counter tops.To prevent this,wash hands with soap and hot water before and after handling food,and
after using the bathroom or handling pets.Wash everything else before and after it touches food.Wash cloths
before you use them again for anything else.
4.( )
Cook food thoroughly until it is done.For example,cooked red meat looks brown inside.Use a food
thermometer to check the internal temperature of meat,poultry,casseroles and other food.Use a thermometer
with a small-diameter stem.Insert the thermometer 1 to 2 inches into the center of the food and wait 30
seconds to ensure an accurate measurement.Check temperature in several places to be sure the food is evenly
heated.
5.( )
Use clean containers to store and serve food.When a dish is empty or nearly empty,replace with fresh
container of food,removing the previous container.Place cold food in containers on some ice.Place the
container inside a deep pan filled with ice to keep food cold.Once food is thoroughly heated on stove top,
oven or in microwave oven,keep food hot by using a heat source.Place food in chafing dishes,preheated
steam tables,warming trays and / or slow cookers.
yuan_zhuzhu1年前1
xuwei027 共回答了25个问题 | 采纳率92%
1-5:FBECD
英语孩错题 内容如下要求改正所给短文的错误。如无错在括号内写对;如有错误(每行只有一个错)则(该行多一个词:把多余的词在
英语孩错题 内容如下
要求改正所给短文的错误。如无错在括号内写对;如有错误(每行只有一个错)则(该行多一个词:把多余的词在词的旁边用/划掉。
该行缺一个词:在缺词处加一个漏字符号“^”在该词旁边写上该加的词。
该行错一个词:在错词旁写“?”然后写出正确的词)
注意:原行没有错的不要改。
Dear Jenny,
How nice to hear of you!In your letter you asked0 ( )me how to stay healthy.I`d like to give you some advices.
claymud1年前1
sung31 共回答了15个问题 | 采纳率73.3%
How nice to hear of you中的of改为from。I`d like to give you some advices. 中的advices去掉s就好了!
i would like to meet with you at your convenience这句话中with多余吗
i would like to meet with you at your convenience这句话中with多余吗?
waterman20041年前3
bearbaby22 共回答了23个问题 | 采纳率100%
这个with 可有可无,不影响表达
补全对话,方框中有两个选项是多余的
补全对话,方框中有两个选项是多余的
A.Good morning.
B.Yes,it is.
C.where are my keys?
D.Is it on the sofa?
E.No,they aren't.
F.are the keys on the sofa?
G.Bye-bye.
A:Mom,where is my backpack?
B:1.________.
A:No,it's not on the sofa.
B:Is it on your bed?
A:2.________.It's here.Thank you ,mom.But 3.________.
B:Are they in the drawer?
A:Let me see.4.________.
B:Are they in your backpack?
A:Yes,they are.
B:I am going to school,goodbye,mom.
A:5._________.
第十二感1年前1
jixiong6666 共回答了16个问题 | 采纳率87.5%
D B C E G
Ⅲ.从方框中选择适当的句子完成对话,其中有一项多余.
Ⅲ.从方框中选择适当的句子完成对话,其中有一项多余.
A.Some pictures in which he is playing the piano with feet.
B.We can learn a lot from him.
C.What happened to the young man?
D.I think that a real hero must be brave and optimistic (乐观的).E.I decided to write a story about the young pianist.
F.Is he the young man without arms,but plays the piano quite well?A:Hi,Xue Tong.What do you think of heroes?
B:1______
A:I agree with you.
B:By the way,do you know Liu Wei?
A:Liu Wei?2______
B:Yes.He plays the piano with feet.
A:He is really a hero.He never gives up his dream!3_______
B:That’s right.And our English teacher asked us to write a story about a hero today.4______
A:Great!And you also should find his inspiring
(鼓舞人心的) words on the Internet.
B:OK!What else?
A:5______
B:Good idea!Thank you!
willam11021年前2
不知不学 共回答了19个问题 | 采纳率78.9%
1―5:DFBEA
选择的请跟据对话内容补全对话(其中有两项是多余的)A:Hi,Jack!where did you go on vacat
选择的
请跟据对话内容补全对话(其中有两项是多余的)
A:Hi,Jack!where did you go on vacation last weekend?
B:I went to Yichang with my classmates.
A:Yichang?tt's a little far from here.( )
B:we went there by bus
A:How was your trip?( )
B:Of course I did.I visited the Great Dam.It is great?
A:( )
B:It was sunny.the sunshine was so beautiful
A:( )
B:Oh,it was delicious.I liked it very much.
A:( )
B:they are very friendly.they wear their national costum(服装)their clothes are very beautiful.and many of them are good at singing.
A:well,I hope to go there someday
A,how was the food there
B,who went there with you
C,how did you go there
D,what didyou see there
E,what do you think of the people there
F,how was the weather
G,Did you have a good time
句子末尾加问号
小虫仁爱那1年前3
天上第一神童 共回答了24个问题 | 采纳率91.7%
A:Hi,Jack!where did you go on vacation last weekend?
B:I went to Yichang with my classmates.
A:Yichang?tt's a little far from here.( C)
B:we went there by bus
A:How was your trip?(D )
B:Of course I did.I visited the Great Dam.It is great?
A:(F )
B:It was sunny.the sunshine was so beautiful
A:(A )
B:Oh,it was delicious.I liked it very much.
A:(E )
B:they are very friendly.they wear their national costum(服装)their clothes are very beautiful.and many of them are good at singing.
A:well,I hope to go there someday
从A-J选项中选出能填入空白处的最佳选项补全对话(选项中有两项是多余的)
从A-J选项中选出能填入空白处的最佳选项补全对话(选项中有两项是多余的)
句子A.Do you do housework?
B;I like my bedroom very much.
C:And my mum gets up earlier than me.
D:I go to bed at 10 o‘clock every night.
E:When do you get up every morning?
F:You must study hard to make her happy.
G:Then I do my homework and review lessons.
H:I study hard every day
I:I like going swimming with my friends.
J:She usually makes eggs and vegettables on the stove
课文A:( )
B:I always get up at 6:30.( )
A:Does your mum cook breakfast for you?
B:yes,she does.( )but she sometimes cooks some milk in a microwave.
A:Oh,you have a kind and busy mum.( )
B:That’s true.( )And I always help mum do housework after dinner( )
A:yes,I do.( )
B:where do you study?
A:I study in my bedroom.( )It is small but comfortable
ahtml1年前1
MAPPLEONE 共回答了22个问题 | 采纳率90.9%
E C J F H A G B
张教练用绳子测游泳池的水深,绳子两折时,多余80厘米,绳子三折时,还差70厘米,求绳长和游泳池的水深.
张教练用绳子测游泳池的水深,绳子两折时,多余80厘米,绳子三折时,还差70厘米,求绳长和游泳池的水深.
要式子.
风飞田野1年前1
老喻 共回答了12个问题 | 采纳率83.3%
设绳长为x 水深=
1/2x-80=1/3x+70 或x/2-80=x/3+70
x=900cm
水深等于1/2*900-80或1/3*900+70=370cm
如图所示是测量物质密度的仪器--密度瓶,它的盖子有一中空管,多余的液体会从这中空管中流出,保持瓶中液体的体积不变.假如装
如图所示是测量物质密度的仪器--密度瓶,它的盖子有一中空管,多余的液体会从这中空管中流出,保持瓶中液体的体积不变.假如装满水的密度瓶总质量是400g,把一些相同的金属颗粒放入天平中测出其总质量为89g.把金属颗粒全部放入密度瓶中盖好瓶盖后,擦干密度瓶外壁,测得密度瓶、水和金属颗粒的总质量为479g.求:
(1)从密度瓶中流出水的质量是多少?
(2)从密度瓶中流出水的体积是多少?(水的密度ρ=1.0×103kg/m3
(3)这种金属颗粒的密度是多少?
ii011年前0
共回答了个问题 | 采纳率
电子工业制作电路板的过程中,用FeCl3溶液来溶解电路板中多余的铜,反应如下:2FeCl3+Cu═2FeCl2+CuCl
电子工业制作电路板的过程中,用FeCl3溶液来溶解电路板中多余的铜,反应如下:2FeCl3+Cu═2FeCl2+CuCl2.FeCl3溶液也可跟铁发生反应:2FeCl3+Fe═3FeCl2.现向FeCl3溶液中加入一定量的铁粉和铜粉,充分反应后,发现有固体剩余.下面有关说法正确的是(  )
A. 向剩余的固体加入稀盐酸,若无气体放出,说明反应后的溶液中没有Cu2+
B. 若剩余固体是铜与铁的混合物,则说明两种金属都有部分溶解
C. 剩余固体可能只含有铜
D. 剩余固体中如果有铁,一定也有铜
GuanXi_05300RX1年前1
waln 共回答了24个问题 | 采纳率87.5%
解题思路:掌握住金属的活动性顺序,金属和盐反应若想生成新的金属,必须是在金属活动性顺序表中前面的金属可以把排在它后面的金属从盐溶液中置换出来.

在这一过程中发生的反应可能有2FeCl3+Cu═2FeCl2+CuCl2,2FeCl3+Fe═3FeCl2
A.向剩余的固体加入稀盐酸,若无气体放出,说明固体没有金属铁,因此溶液中可能有Cu2+,也可能没有,故A不对.
B.由于铁的化学性质比铜活泼,因此铁首先和氯化铁溶液反应,当铁全部被消耗之后,氯化铁才和铜反应,因此剩余固体是铜与铁的混合物,说明铜并没有参与反应,故B不对.
C.由于铁首先和氯化铁溶液反应,因此若有剩余固体时有可能只有铜,故C正确.
D.由于铁首先和氯化铁溶液反应,因此剩余固体中如果有铁一定也有铜,故D正确.
故选CD.

点评:
本题考点: 金属的化学性质.

考点点评: 本题主要考查了对金属活动性顺序的应用,加强学生对信息资料的分析能力的培养,培养学生分析能力、解决问题的能力.

情景对话   根据对话情景和内容,从对话后所给的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。—Honey,
情景对话
根据对话情景和内容,从对话后所给的选项中选出能填入空白处的最佳选项。选项中有
两项为多余选项。
—Honey, what would you say if we have a Christmas party at home this year?
—__1__ Where could you have it? The house is rather small.
—__2__We could put food on the dining room table.
—__3__
-Let me see, - the Turners, the Manders, and a few boys, and some girls from
my office. We may have music or ....
—__4__
—That’s plenty of time. We’ll get some invitations ready and sent out soon. We’ll
call to get a small Christmas tree __5__
—You mean you fix food?
—Well, I can do some easy things. Maybe I can do some shopping --- or, at least,
wash dishes.
A. Then who should we invite?
B. You might have brought the presents in advance.
C. And if we should fix food ourselves, it would cost less.
D. We might have a small one.
E. It would be a lot of work to get the house decorated.
F. But I thought you were planning to go to the Turners’.
G. We’ve got only three weeks to go.
许久爱尚三七1年前1
hq5968 共回答了15个问题 | 采纳率93.3%
1-5: FDAGC
快乐幼儿园大班和小班的小朋友共43人.如果大班每人给7块糖,小班每人给5块糖,就多余15块糖.如果大班每人给10块,小班
快乐幼儿园大班和小班的小朋友共43人.如果大班每人给7块糖,小班每人给5块糖,就多余15块糖.如果大班每人给10块,小班每人给7块,就有13位小班的小朋友分不到糖.问小班有多少位小朋友?
哎呀我的天呀1年前1
一三三五 共回答了19个问题 | 采纳率84.2%
解题思路:大班每人多发10-7=3(块),小班每人多发7-5=2(块).就需要多15+13×7=106(块).因此小班人数是(43×3-106)÷(3-2)=23.

[43×(10-7)-(15+13×7))]÷(3-2),
=[129-106]÷1,
=23(人).
答:小班有23位小朋友.

点评:
本题考点: 盈亏问题.

考点点评: 此题属于盈亏问题,考查学生分析问题的能力.

下列说法中正确的是(  )A.导体能导电说明导体内部有多余的电子B.绝缘体不能导电是因为它不能带上电荷C.直接用手拿着金
下列说法中正确的是(  )
A.导体能导电说明导体内部有多余的电子
B.绝缘体不能导电是因为它不能带上电荷
C.直接用手拿着金属棒与毛皮摩擦时,金属棒不会带电
D.通常情况下,塑料、玻璃、石蜡、空气都是绝缘体
铷铯钫1年前1
www_w2003 共回答了22个问题 | 采纳率95.5%
解题思路:容易导电的物体是导体,不容易导电的物体是绝缘体,导体导电是因为导体内部有大量的自由电荷,绝缘体不导电是因为绝缘体内部几乎没有自由电荷.常见的导体有金属、石墨、人体、大地、酸碱盐的水溶液.

A、导体能导电是因为导体内有能够自由移动的电子,故此选项错误;
B、绝缘体不能导电是因为它内部几乎没有自由电荷,故此选项错误;
C、人体是导体直接用手拿着金属棒与毛皮摩擦时,电荷会从人体导走,金属棒不会带电,故此选项正确;
D、通常情况下,塑料、玻璃、石蜡、空气都是绝缘体,正确.
故选CD

点评:
本题考点: 金属导电的实质;绝缘体.

考点点评: 本题考查了导体和绝缘体的概念及导体导电和绝缘体不导电的原因,属于基本内容,比较简单.

根据对话情景选择恰当的选项,其中有两项是多余的。
根据对话情景选择恰当的选项,其中有两项是多余的。
A: Hi, Zhou Jun, where did you go last week?
B: 小题1:
A: Where is Hangzhou?
B: It’s in Zhejiang, the south of China.
A: 小题2:
B: It’s famous for Leifeng Pagoda, Bainiangzi, Linyin Temple and especially West Lake.
A: Do many people go there to enjoy their holidays every year?
B: 小题3:
A: How long did you stay there?
B: 小题4:
A: Did you take a lot of photos?
B: Certainly. We also had some delicious food. 小题5:
A: What an exciting trip! I’ll go there one day.
A.And we had a very wonderful time.
B.Yes, they do.
C.I went to Hangzhou with my friends.
D.In two days.
E. What is it famous for?
F. For two days.
G. Yes, they will.
淋雨的风筝1年前1
小娃娃生日快乐 共回答了18个问题 | 采纳率94.4%
小题1:C
小题2:E
小题3:B
小题4:F
小题5:A

实验室里为什么不用石灰水吸收或除去多余的氯气,而是用氢氧化钠溶液?
用心做1年前3
孤独的爱 共回答了7个问题 | 采纳率42.9%
石灰水浓度低,吸收效果不好
根据对话内容,从方框中选择适当的选项补全对话。选择中有两项为多余的选项。(每小题1; 满分5)
根据对话内容,从方框中选择适当的选项补全对话。选择中有两项为多余的选项。(每小题1; 满分5)
A. Maybe you’re right.
B. Is there anything wrong?
C. I’ll try to understand her.
D. She nags me about almost everything.
E. That’s a good idea.
F. But she doesn’t like it at all.
G. Could I use your telephone, please?

A: Hello, Xiao Hong!
B: Hello!
A: You look a little upset. 小题1:
B: Yes. It’s just my mom. She always nags(唠叨)me.
A: Really? What does your mother nag you about?
B: 小题2: “ Get up now... Everything must be in place... Don’t forget your piano lesson...”
A: Well, all the mothers like saying these words to their children.
B: Also, I’m fond of pop music. 小题3: We don’t have the same interest in many things.
A: 小题4: But I should say she nags you because she cares about you. You’re lucky to have such a good mother.
B: I agree with you. 小题5: .
A: That’s right. Understanding is important. If your mom knows that everything is fine, she will never nag.
没有谁对不起谁1年前1
金戈宝马 共回答了16个问题 | 采纳率87.5%
小题1:B
小题1:D
小题1:F
小题1:A
小题1:C

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
some friends invite you over and serve you a delicious dinner. someone loans you his car while yours is being repaired. you are sick, and a friend brings you a meal and cares for you 1
sometimes simply saying thank you is enough. at other times, it is thoughtful to say thank you in a more specific way. be sure to tell that person what it is that you appreciate and why you appreciate it.
here are some common ways to say thank you.
2 . people are very busy these days. a handwritten note shows you took time to tell some one you appreciate him or her. or you can call and thank the person. you would be surprised how this can make someone’s day. another idea is to send a thank-you e-mail or e-card. 3
to say thank you in a creative way, you can:
★select some flowers from a florist, attach a thank-you note.
★present the person with a basket of fresh fruit or a homemade treat.
★treat a friend to a movie, meal, snack or coffee.
★give a gift card for a bookstore or a restaurant . 4
★find out what the person likes and give something related to that.
★to say a big thank-you to some one, throw a *** or have a barbecue in honor of that person.
as you can see, there are many ways to say thank you. 5 .you will feel good trying one of the ideas, and the person being thanked will feel good too. it’s a win-win situation.
a.think of some ways of your own.
b.you can write a thank-you note.
c.how do you show your gratitude(感激)?
d.the best way is to go and thank him in person.
e.apologize if you forgot to show your thanks at the spot.
f.that way the person can pick out a favorite book or eat out.
g.this is not quite as personal, but it still shows your appreciation.
wht776241年前1
besttangtang 共回答了15个问题 | 采纳率80%
小题1:C
小题2:B
小题3:G
小题4:F
小题5:A

从下面方框中选择适当的词填入短文中,使短文通顺正确(注意有些词要用适当的形式)。方框中有两个多余的词。
从下面方框中选择适当的词填入短文中,使短文通顺正确(注意有些词要用适当的形式)。方框中有两个多余的词。

Last Sunday my brother and I went fishing. We got up very early that day. When we小题1: __________ home,the moon could still be seen in the sky. The morning air was cool and Ifelt wind on my lace. This made us very comfortable. We laughed and talked小题2:__________ the way while we were riding our 小题3:__________. By about six we were already sitting by theriver. Fishing is not easy. If you want to be 小题4: __________, you must be very careful. Thatday we had another good catch. We caught a lot of fish and enjoyed ourselves very much. It was latewhen we got home. We fell a little tired小题5: __________ happy. Fishing is a very good sport.I like it very much.
xdding1年前1
桃心之恋 共回答了21个问题 | 采纳率100%
小题1:left
小题2:all
小题3:bike(s)
小题4:successful
小题5:hut

在两个相同的油滴上都有1个多余电子.如果这两个油滴之间的库伦斥力和万有引力平衡,则这油滴的半径为多少
rock213141年前2
乐鸟 共回答了13个问题 | 采纳率76.9%
GMM/D^2=KEE/(D+2r)^2 (是高中吗?用K了)
应该是理解为 电子不在油滴中心 而是相互远离
…………
1小学仪仗队的同学排队如果排成正方形多余12名同学如果把这个正方形扩大使纵横各增加1人少9人这个小学仪仗
1小学仪仗队的同学排队如果排成正方形多余12名同学如果把这个正方形扩大使纵横各增加1人少9人这个小学仪仗
队的同学有多少人?
rioter1年前3
神主 共回答了14个问题 | 采纳率78.6%
(12+9-1)/2=10
10*10+12=112
买一个航空模型,若每人出8元,则多余3元;若每人出7元,则差4元.问一个航空模型多少钱?设一个航模x元 怎么列方程?
买一个航空模型,若每人出8元,则多余3元;若每人出7元,则差4元.问一个航空模型多少钱?设一个航模x元 怎么列方程?
列一元一次方程
没有毛的猕猴桃1年前1
zw6qq 共回答了17个问题 | 采纳率100%
设航模X元 共Y人.8Y-3=X 7Y+4=X 求出~8Y-3=7Y+4 则Y=7 X=53
只有爱与不爱.没有配与不配.我只想说;我爱你,对于你来说我是多余的?用英语怎么说
只有爱与不爱.没有配与不配.我只想说;我爱你,对于你来说我是多余的?用英语怎么说
只有爱与不爱.没有配与不配.我只想说;我爱你,对于你来说我是不是多余的?修改成这样。
入为声之骨1年前2
多眼皮 共回答了15个问题 | 采纳率86.7%
Only love and not love.Not equipped with the unworthy.I just want to say; I love you,for you I is superfluous?
1.3.5.7.11.13.15.17哪个数是多余的?
zxlovewjy1年前2
chy202128 共回答了20个问题 | 采纳率90%
15
为了防止多余的氨气逸出到空气中,应采取的措施是
x53604551年前3
雨泪玉儿 共回答了22个问题 | 采纳率95.5%
氨气是有毒气体,制取时要考虑尾气处理.试管口的棉花是吸收氨气的,防止逸出到空气中.试管口的棉花还需浸湿,原因是为了收集更纯的氨气.
实验室制取氨气时,为防止多余的氨气散发到空气中,可用稀盐酸(或者稀硫酸)吸收【 酸性的液体都可以.】
从方框中所给的选项中选出能填入空白处的最佳选项补全短文,其中有一项是多余选项。(10分)
从方框中所给的选项中选出能填入空白处的最佳选项补全短文,其中有一项是多余选项。(10分)
Pablo Picasso(毕加索) was born in Spain in 1881. His father was a painter and art teacher. 小题1:__________________He won a prize — “Science and Charity” for his first important painting when he was only fifteen. He studied in several cities in Spain. But there was no one to teach him all that he wanted to know. 小题2:________________________
Paris was then the center of the world for artists. Everything that was new and exciting in the world of paintings seemed to happen there. 小题3:__________________When he was twenty-three, Picasso moved there to live . 小题4:_______________________
When he was over ninety, this great painter still lived his life like a young man. 小题5:____________________________
When he died in 1973, he was ninety-one years old.
路法士1年前1
killaruna 共回答了15个问题 | 采纳率73.3%
小题1:C
小题2:A
小题3:F
小题4:D
小题5:B

有效数字的加法和乘法运算问题1、加法和乘法运算,需要在运算前把每个数的多余部分舍去再运算吗?例如25.675+7.1,需
有效数字的加法和乘法运算问题
1、加法和乘法运算,需要在运算前把每个数的多余部分舍去再运算吗?例如25.675+7.1,需要先写成25.7+7.1吗?那么乘法呢,例如36.787*26.5?
2、多个数相乘究竟结果保留几位,书上写的是结果位数与最少位数的相等,或者可以进一位或者退一位。但是多个数相乘又该怎么办?例如58.95*41.76*29.46
lulubear19821年前1
pinkfloyd0120 共回答了19个问题 | 采纳率94.7%
1.有效数字要看的就是需要保留几位有效数字,如果是一位的话就是 你写的那样。两位的话就是25.68+7.10,不够的需要用0补充。还有一种更深层次的有效数字就是25+7+32.大学里的有效数字统计学,有所涉及。根据自己的情况参考一下吧。
2.58.95X41.76x29.46=72523.21所谓与最少位数相等的意思就是,如果25.6666*26.1,那么结果就保留一位小数。...
英语选词填空(两个多余)并用适当形式
英语选词填空(两个多余)并用适当形式
Mr.Black__1 _to love fishing.He always fished for hours_2_catching anything,but this didn't__3__him.Some fishermen were unlucky:instead of__4__fish,they caught old shoes and rubbish."I'm even less lucky,"Mr.Black said."I've never caught__5__,not even old shoes."He__6__the whole morning on the river,and always went home with an empty(空的) bag."You must give up __7__."His wife said."It's a waste of__8_."But she didn't know one thing--he was not really__9_in fishing.He was only interested in sitting in a boat and doing_10_at all.
without catch anything interested spend nothing fishing used worry time where never
yangenir1年前1
勉强feeling 共回答了19个问题 | 采纳率73.7%
很高兴能够在这里回答你的问题,
1 used
2 without
3 worry
4 catching
5 anything
6 spent
7 fishing
8 tme
9 interesting
10 nothing
从方框中选择适当的句子补全对话,有一项是多余的,请填入 字母编号 。
从方框中选择适当的句子补全对话,有一项是多余的,请填入 字母编号

A: Good evening, Mr. Hall. ____1__
B: I’m from Canada.
A: __2___
B: I work in No.1 Middle School. I’m a teacher.
A: ___3__
B: I teach English.
A: __4___
B: Yes, I can. And I can speak a little Chinese, too.
A: Do you like working here?
B: Yes, I like it very much. And I like Chinese food.
A: Do you have any children?
B: ___5__ I have two, a son and a daughter.
风水好1年前1
你的左边 共回答了18个问题 | 采纳率94.4%
小题1:B小题2:E小题3:A小题4:D小题5:F 小题1:根据答语I’m from Canada可知询问的是你来自哪里,故用where are you from。小题2:根据答语I work in No.1 Middle School. I’m a teacher.可知,询问的是...
画去句子中多余的一个单词再抄一抄正确句子急十万火急
希望像月亮1年前0
共回答了个问题 | 采纳率
英语考试:去掉一个多余单词问题完整的一句话是Far better would it be to open a secon
英语考试:去掉一个多余单词问题
完整的一句话是Far better would it be to open a second retail shop with much higher margins and better cashflow,thanks in part to payment by customers of a 30% deposit.答案是it是多余的.为什么呢?还有一个问题 of a 30%deposit为什么有a 呢 为什么a 不是多余的呢?什么情况下有a 什么情况下没有a 呢
5292994571年前1
anji123 共回答了18个问题 | 采纳率94.4%
Far better...是倒装句,正常顺序是To open... would be far better.所以it就是多余的.a 30% deposit 一笔30%的存款(预付款),需要a.所以a不是多余的.这样说明白了吧?
用所给单词的适当形式填空(有多余的) play rain ill buy give snow visit look ou
用所给单词的适当形式填空(有多余的) play rain ill buy give snow visit look out make snowmen 1.Ben wants to____some presents,because he's going to_____his grandparents tomorrow.2.Su Hai doesn’t go rowing with us today,because she was_____yesterday.3.The boy likes_____the piano.Look!He's_____a concert now.4.It's_____today.It often_______here in spring.5.______of the window.How beautiful!I think it_______last night.
whklm1年前2
superwyj 共回答了16个问题 | 采纳率93.8%
play rain ill buy give snow visit look out make snowmen 1.Ben wants to_buy___some presents,because he's going to_visit____his grandparents tomorrow.2.Su Hai doesn’t go rowing with us today,because she was_ill____yesterday.3.The boy likes_playing____the piano.Look!He's_giving____a concert now.4.It's_raining____today.It often_rains______here in spring.5._Look out__of the window.How beautiful!I think it_snowed__last night.
解释以下现象:未洗涤烧杯和玻璃棒2次~3次.(mB偏小,cB偏低)在定容时加水超过刻度线,再用胶头滴管吸出多余部分。(V
解释以下现象:
未洗涤烧杯和玻璃棒2次~3次.(mB偏小,cB偏低)在定容时加水超过刻度线,再用胶头滴管吸出
多余部分。(V偏大,cB偏低)
mfxs0071年前3
lili8502 共回答了16个问题 | 采纳率87.5%
未洗涤烧杯、玻棒的上面残留有溶质,所以溶质质量偏小,浓度偏低.
定容时超过刻度线的那部分溶液中也含有溶质,吸出后溶质浓度偏低,V偏大.
丝绸摩擦玻璃棒时玻璃棒上有些电子跑到丝绸上了,玻璃棒因缺少电子而带正电,丝绸有了多余了电子而带负电既然如此,为什么丝绸上
丝绸摩擦玻璃棒时玻璃棒上有些电子跑到丝绸上了,玻璃棒因缺少电子而带正电,丝绸有了多余了电子而带负电既然如此,为什么丝绸上的电性又会消失,不永久保留,是有什么补充吗?
wangyun1111wy1年前3
sonic121 共回答了29个问题 | 采纳率89.7%
是空气中的灰尘,空气什么的受到吸引电荷转移到丝绸上(这是在书上看的),就这样一级一级的传到大地(这是自己想的) ,再加上zouluquhaibian的