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【单选题】
下列化学反应中,不能用于制备醇的是
A.
格氏试剂与羰基化合物加成
B.
硼氢化钠与羰基化合物反应
C.
腈的水解
D.
卤代烷的水解
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参考答案:
举一反三
【判断题】对混凝土受弯构件的截面受压区来说,平截面假定是()的。A. 错误B. 不确定C. 正确D. 不全面
A.
正确
B.
错误
【简答题】There is a well-known proverb:"The more haste, the ______ (little)speed."
【单选题】听力原文:How many employees do you have? (A) I have nine employees. (B) My employees work very hard. (C) Because we pay well. (35)
A.
B.
【单选题】The expression 'Haste makes waste' does not _____ to reading .
A.
affect
B.
apply
C.
adopt
D.
attend
【简答题】The death of Mr. Black______ (haste) the final breaking.
【单选题】Written in great haste,____________.
A.
there are plenty of mistakes in the report
B.
there are plenty of errors in the report
C.
we found a great deal of mistakes in the letter
D.
the book is full of errors
【单选题】haste
A.
急速,急忙
B.
催促,赶紧
C.
孵出,孵化
D.
危险;公害
【简答题】Supervising employees by remote control requires more skills than when employees are within physical reach.
【单选题】More ______, less speed.
A.
hurry
B.
rush
C.
quickness
D.
haste
【单选题】haste
A.
n. 和谐,融洽
B.
n. 急速,急忙
C.
n. 监狱
D.
n. 组成部分
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