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【单选题】
关于喷嘴临界压力比叙述正确的是( )A.
喷嘴临界压力比决定于喷嘴前初压;
B.
喷嘴临界压力比决定于喷嘴前滞止初压;
C.
喷嘴临界压力比决定于喷嘴前滞止初压和喷嘴后压力;
D.
喷嘴临界压力比仅与绝热指数有关。
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【单选题】What does the campaign intend to tell people?
A.
Smokers will quit smoking if they don't smoke on the 28th of this month.
B.
Smokers will smoke again if they don't touch cigarette for 28 days.
C.
Smokers can quit smoking if they refuse to smoke five times a day.
D.
Smokers are more likely to quit smoking if they don't smoke for 28 days.
【单选题】_____ I really don't like art, I find his work impressive. [ ]
A.
As
B.
Since
C.
If
D.
Although
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