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【单选题】
下列表面活性剂属于非离子型表面活性剂的是( )
A.
R-NH2HCl
B.
R-OPO3Na
C.
R-N+(CH3)2CH2COO¯
D.
R-O(C2H4O)nH
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【单选题】通常用测定磁罗经自由摆动半周期的方法来检查 是否符合要求。
A.
罗盘磁针的磁矩
B.
罗盘的灵敏度
C.
罗盆的水平度
D.
A+B
【简答题】Richelieu Apartments there held a hurricane party to watch the storm from their spectacular vantage point
【单选题】Ten minutes______too short a time to finish this test.
A.
is
B.
are
C.
has
D.
have
【简答题】Richelieu institua l’Académie française.
【单选题】We can finish this work () a few hours.
A.
in
B.
for
C.
after
【单选题】It is really to finish this in such a short time.
A.
a hard work
B.
hard job
C.
a hardly work
D.
a hard job
【单选题】—Must I finish this job today? —No, you . You can finish it tomorrow.
A.
mustn’t         
B.
needn’t         
C.
can’t
【简答题】Richelieu Apartments were smashed apart as if by a gigantic fist .The rhetorical device used in this sentence is .
【单选题】I’ll finish this work ___ a week。
A.
In
B.
after
C.
before
D.
on
【单选题】Richelieu Apartments weresmashed apart as if by a gigantic fist, and 26 people perished.
A.
incarnate
B.
die
C.
increase
D.
submit