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【单选题】
粗产品环己酮精馏时,应选择( )冷凝管。A.
直形冷凝管
B.
球形冷凝管
C.
蛇形冷凝管
D.
空气冷凝管
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举一反三
【单选题】One in three Americans said that money was a crucial factor in their decision to work for pay (or have a spouse work) rather than stay home to raise the children, with Baby Boomer women most likely to...
A.
there were more job opportunities
B.
they were bored staying at home
C.
they don't have enough money to buy their own house
D.
life was costly
【单选题】As demonstrated by the example of Kepler, what factor besides sheer intelligence seems to be crucial to achieving greatness in the sciences?
A.
The time and effort to put in
B.
The frustration and abstacles to put up with
C.
The ability to overcome traditional ways of thinking is also crucial.
D.
The desire for fame
【单选题】As demonstrated by the example of Kepler , what factor besides sheer intelligence seems to be crucial to achieving greatness in the sciences?
A.
The time and effort to put in.
B.
The ability to overcome traditional ways of thinking is also crucial.
C.
The fruastration and abstacles to put up with.
D.
The desire for fame.
【单选题】How you manage on your small income is a puzzle to me.
A.
我一直纳闷你是如何靠那点收入过日子的
B.
你是如何靠你的小收入过活的对我是个谜
【单选题】One in three Americans said that money was a crucial factor in their decision to work for pay (or have a spouse work) rather than stay home to raise the children, with Baby Boomer women most likely to...
A.
there were more job opportunities
B.
they were bored staying at home
C.
they don't have enough money to buy their own house
D.
life was costly
【单选题】Experts agree that _________ are the crucial factor to compelling presentations.
A.
examples
B.
numbers
C.
stories
D.
pictures
【单选题】Experts agree that _________ are the crucial factor to compelling presentations.
A.
stories
B.
examples
C.
numbers
D.
pictures
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