I had my bike this morning.[ ] A. repair_爱下问搜题

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问题选择题

I had my bike this morning. [ ]

A. repair

B. repaired

C.repairing

D. repairs

答案

答案：B

选择题

I’m delighted _______ as chairman of the students’ union last winter.

A．to appoint

B．to be appointed

C．to have appointed

D．to have been appointed

单项选择题

室内管线由于管件较多，（）占总损失的比例将远大于室外管线。

A、热量损失

B、压力损失

C、局部损失

D、沿程损失