----- I’m sorry . I ________ at you the other day .

----- Forget it. I was also a bit out of control of myself.

A．shouldn’t shout

B．mustn’t shout

C．shouldn’t have shouted

D．mustn’t have shouted

泵安装时吸入高度过大，会造成（）问题而影响泵的运行。

A.泵不出水

B.流量不足

C.消耗功率过大

D.轴承发热