手动截止阀、节流阀的驱动装置通常采用（）
A.平行手轮
B.伞形手轮
C.手柄
D.扳手
参考答案：B
根据答语写出问句。
1 ______________________? Her name is Mary.
2 _______________________? My first name is Bruce.
3 _______________________? His last name is Green.
_____ my English teacher, I have become what I am. [ ]
A. Thanks for
B. Thank to
C. Thanks to
D. Thank for
