异步电动机的定子铁芯内圆表面有槽，用来放置（）。
A、转子
B、转子绕组
C、定子
D、定子绕组
参考答案：D
As far as I know, Caroline _______ music. How about giving her an MP3 for Christmas?
A．do enjoy
B．do enjoys
C．does enjoy
D．does enjoys
下列颅内肿瘤最易合并出血的是
A．多形性胶质母细胞瘤
B．转移瘤
C．脑膜瘤
D．血管母细胞瘤
E．髓母细胞瘤
