一（ ）长桌 一（ ）烛台 一（ ）电话 一（ ）油灯

亮晶晶的星星
蔚蓝蓝的天空

明晃晃的镜子 亮晶晶的星星
红通通的脸蛋 灰朦朦的天空
哗哗哗哗的流水声

粗细均匀的木棒长1.5m 所以木棒重心在中点即0.75m处
棒伸出桌子边0.5m,支点即桌子边缘
棒端挂一20N重物 此物相对支点产生的力矩为20N*0.5m=10(N*m)
棒的另一端微微离开桌面 说明木棒重力刚好使自身平衡即重心产生的力矩与重物产生的力矩大小相等,方向相反
所以 G*(0.75m-0.5m)=10(N*m)
所以G=40N
即木棒重40N,质量为4Kg,
此题须注意,不要认为 木棒1米一节重力产生一个力矩等于0.5米这节重力产生的力矩+重物力矩,这是不对的,木棒作为一个整体,只产生一个力矩,

单独摆放可容纳6人
并排摆放两张可容纳10人
可以知道每再加1张长桌 则可以多容纳4人
所以若按这种方式摆放10张长桌,可同时容纳10+（10-2）*4=42人签名
一般地,若摆放n张长桌,可同时容纳10+(n-2)*4=4*n+2人签名

1、（6-1）n=5n
2、5*10=50

根据题意可得规律：并排摆放n张桌可容纳（2+4n）人签名，则摆放10张桌可容纳2+4×10=42人．
故答案为：42．

根据题意可得规律：并排摆放n张桌可容纳（2+4n）人签名，则摆放10张桌可容纳2+4×10=42人．
故答案为：42．

two long tables put side by side

（明晃晃）的镜子 （亮晶晶）的星星
（圆溜溜 ）的脸蛋 （ 蓝湛湛 ）的天空

明晃晃的镜子
蓝悠悠的天空

you can use round table, long table or square table at banquet. the distance between two tables should be proper when the number of tables over two.
Table for buffet dishes, usually surrounded by furnishings, Central can also according to the Ballroom in the restaurant. If you need to sit down meals, can be square or round out four-person tables. Seats are slightly more than the entire number of guests, so guests are free to sit on.

42

Westerners stand treat using long tables. The host and the hostess sit on the two ends respectively. Then, guests are arranged to take a seat according to their positions, whether they are the guests of hono(u)r or just general guests. Which means, male and female have an alternative seat arrangement. It all depends on the hostess's seat, the male guest of hono(u)r sit on her top right hand side while the wife of the guest of hono(u)r sit on the host's top right hand side. Western gentlemen emphasize "Lady First", they will show their complaisance to the ladies. In China, left symbolize hono(u)r, right means subordinate; Upper side symbolize hono(u)r, lower side means subordinate; Middle symbolize hono(u)r, deviation means subordinate. But in the west, rightsymbolize hono(u)r, left means subordinate.
翻译得很辛苦, 但希望可以帮你:)

10*4+2=42
4N+2
若按这种方式摆放10张长桌,可同时容纳42人阅读
若摆放n张长桌,可同时容纳(4N+2)人阅读

碧莹莹的天空,蓝悠悠的天空,湛蓝蓝的天空,蓝盈盈的天空 ,雾蒙蒙的天空
,白花花的天空

ussiness negotiation seating arrangement
here is the introduction of bilateral negotiation and multilateral negotiations:
seating arrangement of bilateral negotiation
(1) Long table or elliptic table should be used,host and guest will seat by the 2 sides of the table.
(2) If the table placed transverse,the seat face the door belongs to the guest,the other belongs to the host.
(3) If the table placed longitudinal,the right side when you enter the door belongs to the guest,the other belongs to the host.

下午,他挑了好几样东西:两张长桌四把椅子 一副香炉烛台 一杆台秤.
顿号 ,逗号 .句号