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【单选题】
下列物理常数中,须用水或者校正用棱镜校正的是()A.
馏程
B.
折光率
C.
黏度
D.
熔点
E.
PH值
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举一反三
【单选题】- Can your uncle speak English? -_______. But he can speak Chinese.
A.
Yes, he can.
B.
Yes, he can't.
C.
No, he. can't.
D.
No, he can.
【单选题】—Can your father play chess? —______. [ ]
A.
No, he can't
B.
No, he's not
C.
Yes, he is
D.
No, he can
【单选题】Only ____ do the job and only in this way _____ do the job well. [ ]
A.
can he, can he
B.
he can, can he
C.
he can, he can
D.
can he, he can
【单选题】You can’t imagine the difficulty I have ___________the problem!
A.
to solve
B.
solved
C.
solving
D.
solve
【单选题】Every director needs an assistant that he can ________ to take care of problems that may occur in his asbsence.
A.
count of
B.
count for
C.
count on
D.
account for
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