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【单选题】
What is the reason for the woman delaying her meeting?
A.
She has a business meeting during the day.
B.
She must first find the disk in her office.
C.
She can't get away from the conference.
D.
She needs to catch up on her work.
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参考答案:
举一反三
【单选题】Sixty percent of the work______ .
A.
have been done
B.
had been done
C.
has been done
D.
has done
【单选题】Sixty percent of the books _____sold so far.
A.
has
B.
has been
C.
have
D.
have been
【简答题】Nearly sixty percent of the population in China __ (be) farmers
【单选题】I saw him when I passed by.
A.
ran
B.
to run
C.
running
D.
run
【单选题】劳动力参与率M形周期变化规律表现的是( )。
A.
男性劳动力参与率
B.
女性劳动力参与率
C.
青年劳动力参与率
D.
老年劳动参与率
【单选题】离心泵中的________是将原动机的机械能传递给被排送液体的部件,有闭式、半开式和开式三种形式。
A.
叶轮
B.
轴封
C.
压出室
D.
密封环
【简答题】Over sixty percent of the city (was/were) destroyed in the war.
【单选题】系统功率不大,负载变化较小,采用的调速回路为( )。
A.
进油节流
B.
旁油节流
C.
回油节流
D.
回油节流 或 进油节流
【单选题】人们的创造活动归根到底是为了满足()的。
A.
想象
B.
需要
C.
胃口
D.
能力
【简答题】离心泵的叶轮有封闭式、半封闭式和()三种形式。
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