一点电荷q位于一立方体的中心，通过该立方体每个面的电通量为（）。
A. q/(ε0 )
B. q/(3ε0 )
C. q/(6ε0 )
D. q/(8ε0 )
查看答案
What does the passage mainly tell us?
A. How to live with your roommates.
B. How to win the respect of your roommates.
C. How to be good friends with your roommates.
D. How to be nice to your roommates.
What’s the only way you will be able to live with your roommates according to the passage?
A. To have talks with your roommates often.
B. To be considerate towards your roommates.
C. To make compromises when problems arise.
D. To change your habits and ask your roommates to change theirs.
Which of the following is true?
A. If you try hard, you will be able to solve the problems you have with your roommates.
B. It is impossible for roommates to get along well because they disturb one another.
C. The best way to deal with your roommates is to stick to what you want to do.
D. If you have friends over and therefore may disturb your roommates, make apologies.
What are the two speakers talking about?
A. How to interest people at a party.
B. How to give speeches to people at a party.
C. How to engage in small talk with people at a party.
D. How to find out what people are interested in at a party.
微信支付 
支付宝支付