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【单选题】
一个分子式为C6H10O的化合物的IR光谱如下,判断是下例那个化合物IR吸收谱图?A.
B.
C.
D.
E.
F.
G.
G
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皮皮学刷刷变学霸
举一反三
【简答题】常见的标准对刀块有[填空(1)] ，[填空(2)] ，[填空(3)] 和侧装对刀块。
【单选题】Fortunately there are still a few tasty things for us to enjoy in relative security. Their numbers, however, are depleted almost daily, it seems, by ruthless proclaimations from the ever-watchful Food...
A.
we must stop eating salt immediately
B.
she is not convinced that salt is harmful
C.
the Food and Drug Administration works well with doctors
D.
soon there won't be anything tasty left to eat
【单选题】第二篇 Fortunately there are still a few tasty things for us to enjoy in relative security. Their numbers, however, are depleted almost daily, it seems, by ruthless proclaimations from the ever-watchful ...
A.
we must stop eating salt immediately
B.
she is not convinced that salt is harmful
C.
the Food and Drug Administration works well with doctors
D.
soon there won't be anything tasty left to eat
【单选题】Fortunately for us we're finding our new internet division is showing an increased ....... .
A.
prophet
B.
profit
C.
profitably
D.
profits
【单选题】“Fortunately” those same magazines ______ us ______ ready solutions in the form of advertisements for products that would “catch us up” to the Joneses.
A.
provided … in
B.
provided … for
C.
provided … with
D.
provided … out
【单选题】.It would ______us a ____ time, but fortunately, we didn’t.
A.
take; along
B.
take; longer
C.
have taken; longer
D.
have taken; long
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