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【简答题】
是否存在实数a，使函数 为奇函数，同时使函数 为偶函数，证明你的结论。
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举一反三
【单选题】-----Haven’t you heard the news? -----What news? ----- Some of the workers are _______ while others are ______.
A.
on the march, on strike
B.
on march, on strike
C.
on the march, on the strike
D.
on the strike, on march
【单选题】Some of the workers as much as the manager ___ responsible for the loss.
A.
was
B.
were
【单选题】—Haven’t you heard the news?—What news?—Some of the workers are onmarch while others onstrike.A．t
A.
1. —Haven’t you heard the news? —What news? —Some of the workers are on march while others on strike. A．the；the
B.
the;/
C.
/;the
D.
/;/
【单选题】What is the main idea of the news item?
A.
Some of the office workers have breathlessness.
B.
Few milk powder factory workers experience wheezing.
C.
Mothers and babies benefit the most from respiratory tests.
D.
There is a link between asthma and exposure to milk powder.
【简答题】Some of the workers found it hard to____all the change in working methods.
【简答题】在SQL语句中，与表达式“仓库号NOT IN（'whl ','wh2')”功能相同的表达式是A）仓库号='wh1'AND仓库号='wh2'B）仓库号!='whl' OR仓库号='wh2'C) 仓库号$amp quot$wh 1' OR仓库号！='wh2'D）仓库号!='whl' AND仓库号!= 'wh2'
【单选题】--- Haven’t you heard the news? --- What news? --- Some of the workers are on ____ march while others are on ____ strike.
A.
/; the
B.
the; /
C.
/; /
D.
the; the
【单选题】________________ severe financial problems, the company had to lay off some of the workers.
A.
faced with
B.
facing with
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