我国发射的第一颗探月卫星“嫦娥一号”，进入距月面高度h的圆形轨道正常运行。已知月球半径为R，月球表面的重力加速度为g，万有引力常量为G，则嫦娥一号绕月球运行的周期为
B．嫦娥一号绕行的速度为
C．嫦娥一号绕月球运行的角速度为
D．嫦娥一号轨道处的重力加速度
CD
题目分析：设月球质量为M，卫星质量为m，在月球表面上，万有引力约等于其重力有：
,卫星在高为h的轨道上运行时，万有引力提供向心力有：
,
由上二式算出g1、v、
、T可知AB错，CD正确，所以本题选择CD。
| 从对话后的选项中选择适当的选项补全对话。 | |
| A: Do you like Beijing, Jenny? B: 1_______ Beijing is one of the most beautiful cities in China. A: Yes, and I'm sure Beijing will be more beautiful in 2008. B: I agree. It will be one of the most beautiful cities in the world. A: I predict that there will be more trees and less pollution. B: Yes. And there will be more places for sports. A: 2_______ B: Beijing will be more international. 3_______ A: I want to be a volunteer of the Beijing 2008 Olympic Games. B: Me, too. That will be very interesting.
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