电气设备保护接地电阻越大,发生故障时漏电设备外壳对地电压()。
A.越低
B.不变
C.越高
参考答案:C
Mooncakes, _____ the moon, are round. [ ]
A. look like
B. looks like
C. like
D. likes
我国第一部著录甲骨文的著作是刘鹗的()