求即时回复!有密度分别为ρ1 和ρ2 的两种水溶液各m千克

B


互联网诞生于1969年。

单3

假设总长度为x,因为2a(x/2)=Vs²-Vo²,2a(x/2)=Vt²-Vs².所以Vs²-Vo²=Vt²-Vs².所以Vs²=(Vo²+Vt²)/2.

Today’s Internet is a powerful way to communicate,including e-mail,instant messaging and chatroom services.

1:2:3
1:4:9
1:3:5
1:√2:√3
1:√2:√3
1:√2-1:√3-√2

平均速度是整个位移除以总的时间,所以v=200/32

设在点B的速度为V、在BC两点间运动的时间为T,则在C点的速度是5/3 *V
得V*T+1/2 *g *T*T=80
V+gT=5/3 *V
解得T=（根号73 - 3）/2
剩下的自己算
2.设加速度为a,第五秒的位移S5=（0.5+4*a)*1s + 1/2 * a *1*1=4.5a+0.5
第七秒的位移S7=（0.5+6*a)*1s + 1/2 * a *1*1=6.5a+0.5
S7 - S5=4
所以可得a=2m/s*s
S5=9.5m

地震造成两个大的版块断裂开之以后,大量海水涌入地幔,被即时遇高温升华成乌云密布,导致缅甸狂风暴雨,以及长江以南各省大暴雨(*见本空间有文章为:大地震后有大洪水报告及原因).
地幔层有一种物质,可以理解为岩溶物质,是在地幔层断开之后,溶合地幔和版块之间的裂封的.这种物质如果不能及时填补,小地震不断,南方暴雨无法停止.
由于蛇和青蛙,是对海洋和陆地温度非常敏感的动物.蛇可以感知到1/2000度的地球表面的温度变化.由于岩溶质一直填不够,海水不断进入地幔层,所以长江以南,缅甸,美国西部等地大暴雨无法停止.
常常还伴随着小的地震(人类可能感觉不到的),受空间磁场的影响,大风,暴雨不断.一直到地幔层的岩溶质填补完毕以后,这些动物才不会轻易出来.
据我猜测,由于填补还需要一段时间,所以未来一个月内的这些蛇,青蛙等动物的野外活动,是相当频繁的.

你说的氧桥是什么...一般的氧桥是从大气瓶转到小气瓶的连接杆也叫过气管吧,
大氧气瓶的氧气表上是没有地方装氧桥的.
你说的是2L的小氧气瓶吧.小氧瓶上的阀门上有一个氧气表,但是不用氧桥也可以即时监测小氧气瓶上的压力呀...

请说明型号.和你需要的到底是什么东西.

剪报纸,剪书,找个本子贴上面.也可以看视频,简单几句话记一下大致内容就可以

D

哪一种语言?
(1) the stipendiary library miserable
The business tax is not immediately, and ship raft not on that day on, ship in inspection and XianCi raft embrace of tomorrow. And go "with or without tax declarations men into blocking, if people from the city tour column, each have five miles off the battle eighty. The women in ZhouChe hood eaves, within the examination, and in struggled to good luck body search, if stopped into Che stripped the ambiguous declarations or wrapped bowlder things, add a minute, LiuNan invite resistance 1 above, and add a minute.
The tax declarations should lead to thing introduction, while workers were soldiers, invite resistance level LiuNan moment and with the thing number or omit, if so, each staff who for revealed a hundred. Therefore take, dirty light Kilimanjaro, this accurate LiuNan, 1 above, adjacent to loss loser woven pipe and franchisor charges.
The business proceeds xing vendor has smoked solution and avoid two states bus-mess tax outside, the rest close taxes field service not namely inspection tax, if receive LiSheng autopay, each staff a hundred. Leave sluggish 3, add a minute, sin stop ACTS for two years. Therefore take possessions, Kilimanjaro spoils light person ACTS for a year.
The magistrate in tax QingTuo state after taxes and inflammatory those each ACTS a year and a half. If because of QingTuo after tax and the kui price to buy the bus-mess tax characters, cause rao tax money, the various projects have kui, quasi stolen theory. Namely state minister library, struggled to appoint tax subsidizes looking for person, ACTS for a year.
The private group, looks for tax field with. Invite resistance, who ACTS year. Cmail That taxes money, ZuoZang theory. Still the lawsuit xu.
The outline shipped by default NaShuiQian, detection limit or limited within the five viscera, and not without reason, and about drink nameless the tax money, each ACTS for two years. New money and grain outline margin road, struggled to live, reduce the shore tally five etc. If there is revealed Que goods experience place, don't sit.
The empty boat and outline shipped and embrace load officer materials, with the fort leymus LiSheng money, rod, xu accused a hundred.
The officer or send content in the sweet taste and joab with guest, TongShi person, should dry run, and accompanying with men. In ShuiZhe minnith, rod by ninety, send person, add a minute, the third added by money. Sweet guest doesn't sit down.
The KeFan tea goods, through tax field, prison officials don't teach others by your procuratorial person, rod 100. The KeFan solution salt, to trade through taxation, county and state, will not lead the rod rod batch, hewn sixty, xu accused.
The KeFan solution salt, after tax, will not lead to cut the rod for batch, rod over sixty. If batch without delay and leave cut by day, sin also like. Every day, add a minute, sin check staff a hundred.
The KeFan GuMi surface wheat and wood, struggled to collect taxes and take ship force winner, ACTS for two years. Ever since the heavy peg-intron. take spoils. Still xu guest by prison company more lawsuit.
The tax should be gen buy, not ShenShangShu revenue to quote, and although "and should not buy victim, and petitioning, every one rod 100.
The ShuiZhe minnith, reach forty. Tax money full ten penetration, rod and eighty. Prison officials designed Canon block in the head from minnith, theory such as cheat minnith, don't lose the law, shall be the competent family have made his things people all are the tax. An insider, reduce second-class, and xu accused.
The guests are photographed zha say oneself thing, LAN natrium, ACTS ShuiZhe shang two years. Guest minus 3, xu accused. Although an object declarations, and according to the tax law minnith, when official know not lift, with sin. By requestor, add second-class. Namely, though not cheat say oneself thing, but for GuanYa shadow berea, meter will request, reduce falls tax money and sin light person, rod 100. By wealth, spoils peg-intron., cheat said oneself thing, LAN natrium bus-mess tax by fortune with. Quasi stolen theory.
The collection of five or more people, the rod minnith, don't go for wealth tax this similarity, and eighty, xu catchers caught, refuse the rapids, rod 100. Hurt, who lay heavy and headed for a year and a half, ACTS collection, and matches state. Tax content and load ZhouChe by-products, no officer.
(2) miscellaneous miserable
The taxation supervision, and concurrently with the prison. Buy the bus-mess tax characters, who ACTS for a year. Refers to pay tax, or already pay taxes, without day person. If the buyer is but torre, each staff and a hundred.
The guest to buy goods in city smoke solution content proceeds company, please male with lead item, listen to him, if small states sell out lead item, who, in accordance with the number of things minnith unseen tax law.
(3) false miserable
The palm other taxable materials, with reason minnith, make the person who accuse to reward, in accordance with rules fraud method, dirty light person, rod 100.
(4) name example miserable
The bus-mess tax minnith, such as fear, and drink stolen cheat for fire and water, or to hunt lattice, should be banned weapons to capture sinners, and with the changyun dew first original

为热爱体育的互联网用户提供一种全新的体验.
supply the internet subscriber with fire-new experience

V^2-V1^2=2as1
V2^2-V^2=2as2
s1=s2
V^2-V1^2=V2^2-V^2
化简得V=根号0.5(V1^2+V2^2)

解题思路：根据已知中，实线表示即时曲线y=f（x），虚线表示平均价格曲线y=g（x），根据实际中即时价格升高时，平均价格也随之升高，价格降低时平均价格也随之减小的原则，对四个答案进行分析即可得到结论．

∵即时价格与平均价格同增同减
故A，B，D均错误
故选C

点评：
本题考点： 函数的图象．

考点点评： 本题考查的知识点是函数的图象，其中根据实际情况，分析出函数y=f（x）与y=g（x）单调性的关系，是解答本题的关键．

解题思路：本题主要考查鸡皮疙瘩的相关知识．
起鸡皮疙瘩是恒温动物为保存一定体温而特有的生理现象．当大脑感知到寒冷、紧张或恐怖时，紧张与兴奋时工作的交感神经产生作用，牵动体毛的立毛筋收缩，从而导致鸡皮疙瘩出现．

A、鸡皮疙瘩是以在寒冷环境中，通过神经调节做出的反应．其反射弧由皮肤内的冷觉感受器、传入神经、下丘脑为体温调节神经中枢、传出神经和效应器（立毛肌）组成，A错误；
B、鸡皮疙瘩是由较低级神经中枢完成的，而大脑皮层是高级中枢，B错误；
C、鸡皮疙瘩是由较低级神经中枢完成的非条件反射，C错误；
D、人受温度刺激就会出鸡皮疙瘩，属于应激反应，D正确．
故选：D．

点评：
本题考点： 体温调节、水盐调节、血糖调节．

考点点评： 本题主要考查学生对基础知识的理解能力．应激性是指一切生物对外界各种刺激（如光、温度、声音、食物、化学物质、机械运动、地心引力等）所发生的反应．

1对于A答案我很奇怪,题目就是这个意思啊 为什么说忽略了呢.至于B题目都说了不幸的是电视作品没得到好评啊
2假设三种球数为33 33 34则张三错 如果为100 0 0则王五错 只有李四对 真不知道选哪个
3总经理的意思是提拔一个或者2个 既然董事长不同意 那应该是2个都不提拔啊
4首先这里的善和恶是不能按个人想法来理解的 所以J先生为了顺利晋级不算是好的动机；S女士造成的伤害的确是不能预见,但她造成伤害的可能性是可以预见的,按照题目,算恶

Instant Messaging

s=at+ao,这里ao=0,a=3m/s2；
第三秒末的即时速度为 s=3*3=9m/s.
获得15m/s的速度,15=3t,t=5s

访问：有目的地去探望人并跟他谈话.
即时：立即.
宁静：（环境、心情）安静.
安静：没有声音；没有吵闹和喧哗.

作文要自己写,不能抄别人的,等会给你看看我的

答案C
互联网的普及不但没有削弱其他媒介的地位,而是同时出现向上发展的趋势,实际上传统的媒介纷纷通过网络来获得读者和观众.

A1:=V>REF(V,1);
XG:COUNT(A1,3)>=3;
请在15分钟选股周期使用。

So even if you are sleeping,you can also have it in your arm to fall asleep.

瞬时速度=∧S/Δt （∧S,Δt →0） Δt →0 =间隔时间趋近于0
是由位移 S(t) 求导得出的
平均速度和瞬时速度的区别就很简单了
平均速度是某一段时间的位移除以时间
瞬时速度是某一刻的速度
另外,在匀速运动时,平均速度的大小等于瞬时速度的大小

观星程序skymap

没题怎么答?烃就是只含碳氢元素的有机物,你自己判断吧

第1秒末的速度
V1=at
由牛顿第二定律
F-f=ma
第1秒末即时功率
P1=FV1
方程联立,得
P1=22KW

用导数
S'=2t-2
t=1时
S'=2-2=0
即时速度为0

　　女士们先生们,考后狂欢会马上开始,即时,您可能会有头晕眼花四肢痉挛呼吸急促等生理反应,均属正常现象,请做好防护措施. Hi,ladies and gentlemen!Our carnival will begin soon after the examination ends.Till then, maybe you will have such physical responses as spastic quadriplegia,dizziness,lack of breath, etc,which are all normal phenomena.Please take some protective measures mentally in advance.

全部都是V

对,瞬时速度的方向跟指点运动的方向有一定的夹角.因为质点运动的方向也就是轨迹的方向.

能量守恒
汽车做功W=Pt
汽车做功转化为动能E=m(2v)^2/2-mv/2=3mv^2/2
即W=E,所以Pt=3mv^2/2,得v=√[(2pt)/(3m)]

世界上没有永动机.

即时速度方向与质点的运动方向应该是一个概念.它们的方向是统一的才对.我想你要说的是加速度方向与运动方向成一定的夹角吧.

因为速度的方向就是运动的方向.它在某一点即时速度方向与质点运动方向相同.

the date of dilivery will be 5th,July,and Mr Wu hope you make the inspection of his goods in time before the dilivery .
we already told Mr Wu that your size of order is "small"

F-f=ma
得F=ma+f=5000x2+1000=11000N
V=at=2x1=2m/s
所以P=FV=11000x2=22000W

根据v=gt可知在开始连续的两个1s末的速度大小比是1：2；
故选B．

测量水位、流速的设备肯定有,水文仪.但是不可能同时测定水质.

87=3×29,
选87..

解题思路：本题主要考查鸡皮疙瘩的相关知识．
起鸡皮疙瘩是恒温动物为保存一定体温而特有的生理现象．当大脑感知到寒冷、紧张或恐怖时，紧张与兴奋时工作的交感神经产生作用，牵动体毛的立毛筋收缩，从而导致鸡皮疙瘩出现．

A、鸡皮疙瘩是以在寒冷环境中，通过神经调节做出的反应．其反射弧由皮肤内的冷觉感受器、传入神经、下丘脑为体温调节神经中枢、传出神经和效应器（立毛肌）组成，A错误；
B、鸡皮疙瘩是由较低级神经中枢完成的，而大脑皮层是高级中枢，B错误；
C、鸡皮疙瘩是由较低级神经中枢完成的非条件反射，C错误；
D、人受温度刺激就会出鸡皮疙瘩，属于应激反应，D正确．
故选：D．

点评：
本题考点： 体温调节、水盐调节、血糖调节．

考点点评： 本题主要考查学生对基础知识的理解能力．应激性是指一切生物对外界各种刺激（如光、温度、声音、食物、化学物质、机械运动、地心引力等）所发生的反应．

由于打点计时器使用的是50Hz交流电源，所以打点周期为0.02s．
根据运动学公式△x=at ² 得：
a=
x 12 - x 01
t 2 =
(3.3-3.1)cm
(0.02s) 2 =5.00m/s ² =5.00m/s ²
利用匀变速直线运动的推论
v ₁ =
x 02
t 02 =1.60m/s．
故选A．

Vt/2=V(平均)=vo+vt/2
是求证这个吧..
设一物体匀变速运动,加速度为a,运动时间为t
有公式vt=vo+at知
从0到t/2时间段内Vt/2=vo+at/2①
而从0到t时间段内,Vt=v0+at②
联立①②式得Vt/2=(vo+vt)/2
因为匀变速直线运动的速度是均匀变化的,故
V(平均)=(vo+vt)/2
所以得Vt/2=V(平均)=(vo+vt0)/2
这是标准证法,相信我吧..

你说的这些功能都会有,但要说下码表的夜光都不是很亮好像,而且只有3秒左右吧.这个并不重要.骑车看前方,你也不会都盯着码表看吧.
还有我不推荐无线码表.我一开始也是用无线的,经常感应不到.有一次晚上就是因为没感应到而我又是刚开始玩车很在意这个,骑车时看到没反应了就低头弄码表没看前面.结果撞在路边的汽车上了.雨刮都给我撞掉了.
给你推荐西格玛509,几一块线,好用

(1) Buying goods a square should check and accept immediately after lifting the goods,discover the goods quality contain problem,needing to tell my plant within ten days,the past expiration of date is all irresponsible(2) buy goods a square to be lifting date of goods don't lift goods in 15 days,my plant's hasing power will buy the goods square deposit as goods to put off to repair to taste,don't send back a deposit(3) product damage,artificial and storage aren't appropriate but damage in the conveyance the process,the my plant doesn't compensate the whole the loss(4) signs contract from both parties of take effect from day

不能.
即兴,根据当时的兴致和感觉而写成的作品.
即时,指的是当时一定的时间内.