题目内容

So________ that he can't run fast.

A. fat is he
B. fat he is
C. fat does he
D. fat he does

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In the old house _________ 10 years ago.

A. an old lady live
B. had old lady lived
C. lived an old lady
D. have old lady lived

_____ a good teacher, I would study hard in the university.

A. Should I to become
B. Were I to become
C. I should become
D. Had I become

由定差减压阀和节流阀串联而成的组合阀是（）

A. 温度补偿调速阀
B. 溢流节流阀
C. 调速阀
D. 普通节流阀

在液压系统中，节流阀常用来控制调节执行元件的( )。

A. 运动方向
B. 运动速度
C. 工作压力
D. 输出力