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【单选题】
在液压系统中,工作流量达到( )时,常采用液动换向阀。A.
63L/min
B.
53L/min
C.
50L/min
D.
65L/min
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A.
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B.
错误
【单选题】Which one of these is not the reason why the inverted pyramid structure is used?
A.
Journalists can send news immediately without missing any important information.
B.
It is efficient for the editors to pick the biggest news out of piled-up messages.
C.
Editors can handle the most valuable news by reading the whole article.
D.
People usually scan the headline and the beginning part when they are taking a bus.
【简答题】B2B电子商务交易中买家操作流程有哪些?
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【单选题】which of these is not the reason for the students' knowledge deficits?
A.
They are being misled by their friends and families.
B.
Teachers only teach a little grammar and even less advanced vocabulary.
C.
The yonger teachers themselves have little knowledge.
D.
students are not very intelligent.
【简答题】一旦我们心中设定了什么目标,就能实现什么目标。(attain)
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