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【单选题】
( )是依靠柱塞在缸体内往复运动,使密封容积产生变化,来实现吸油和压油的。A.
齿轮泵
B.
叶片泵
C.
柱塞泵
D.
螺杆泵
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反馈参考答案：
举一反三
【单选题】关于实施整体变更控制,以下哪个说法是正确的?
A.
整体变更控制只针对加大的变更，而不必针对较小的变更
B.
整体变更控制要针对所有变更，无论大小
C.
整体变更控制通常由变更控制委员会进行
D.
整体变更控制只针对关于项目计划的变更请求，而不针对各种纠正措施意见
【单选题】My picture ( ) until next week.
A.
won’t develop
B.
aren’t developing
C.
don’t develop
D.
won’t be developed
【单选题】I had to finish the picture ________ my mother came back.
A.
until
B.
before
C.
after
D.
while
【单选题】Tony was drawing a picture I was doing my homework.
A.
if
B.
because
C.
while
D.
until
【单选题】Tony was drawing a picture ____ I was doing my homework at that time.
A.
while
B.
because
C.
until
D.
if
【简答题】Dialogue 3 --Hello. Michael. You are busy, aren't you? --Yes, ____1______. What can I help you with? --Something ____2____. I'm wondering if there is any chance of borrowing your camera. --Sure. But m...
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