水泵的叶轮可分为(),(),()。
参考答案:离心泵的叶轮可分为封闭式、半封闭式和开敞式三种
---Did he say something in the lecture that ______you?
----Not really, Actually I felt sleepy over his speech.
A.adjust to
B.attached to
C.appealed to
D.referred to
领导武昌起义的是同盟会。( )