【单选题】根据三相异步电动机的参数表达式,当定子电压增大时,电磁转矩( )
【单选题】,a car knocked her down.
A.
While crossing the street
B.
While she was crossing the street
C.
She crossed the street
【单选题】____, a car knocked her down.
B.
When she had worked home
D.
As she was walking home
【判断题】公称尺寸在0-500mm间设置了IT01,IT0,IT1-IT18共20个公差等级