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【单选题】
.艾斯特最初是由( )学者克尔和科拉普夫于1942年提出的。A.
英国
B.
法国
C.
瑞士
D.
两欧
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举一反三
【单选题】I’ll come after the meeting if time ________.
A.
allows
B.
needs
C.
requires
D.
permits
【单选题】We expect to finish painting by Friday, if time pressing, the bosun can arrange ________work for the sailors
A.
over time
B.
over the time
C.
extra time
D.
overtime
【单选题】The university wants its undergraduates to __ a regional language, if time permits.
A.
take up
B.
take after
C.
take on
D.
take over
【单选题】—What are you going to do this weekend? . If time permits, I may go to Shanghai with my friends.
A.
Don’t mention it
B.
It doesn’t matter
C.
Forget it
D.
It depends
【简答题】伯努利方程中p/ρg表示1N的流体在某截面处具有的静压能,又称为 。
【单选题】I’ll come after the meeting if time ______.
A.
permits
B.
is permitting
C.
is permitted
D.
has permitted
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