变压器变压比是指一、二次侧相电压之比。
参考答案:对
-Excuse me, _____ is the nearest bookshop?
-Go down the street and turn left at the second corner.[ ]
A. where
B. what
C. how
D. who
74. It’s an untamed monkey. Keep it on a or it may attack others.
A.chair
B.chain
C.corner
D.Cap