线路的交流测量包括绝缘电阻的测量、环路电阻的测量、不平衡电阻的测量。
参考答案：错
— Where is Mary? — She is in the _________. [ ]
A. classroom
B. gym
C. library
—_____
—Yes, please. I want a notebook. [ ]
A. Where are you?
B. Who are you?
C. Can I help you?
D. What do you want?
[ ]