鼠笼式异步电动机采用降压起动,其目的是:()。
A.使起动过程平稳
B.减小起动电流
C.减小起动力矩
D.增大起动力矩
参考答案:B
选择恰当的短语中,并用正确形式完成句子。有两项是多余的。
star in, thanks to, be likely , pick out, more than, be set in, devote oneself to
小题1:.DengYaping _______ Pingpang in her teens.
小题2:It was _______ his advice that I succeeded.
小题3:The film _______ Paris in the 18th century.
小题4:Road accidents ______ happen in such snowy weather.
小题5:He was ______ a scientist, but a poet.
Hooray! Class 1 ____ the game. [ ]
A. win
B. won
C. wins