当三相异步电动机的电磁转矩与转子旋转方向相反时,电动机处于制动状态。
参考答案:对
It’s quite ______ that Mike is lying -he can’t be hungry already, for he had lunch only an hour ago! [ ]
A. genuine
B. contrary
C. obvious
D. rare
你能用成语表达出下面两句话的意思吗?
(1)身在罗马,就像罗马人一样行事。
__________________________________
(2)条条大路通罗马。