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【单选题】
气雾剂中氟里昂(如F12)主要作用是()A.
潜溶剂
B.
抛射剂
C.
防腐剂
D.
稳定剂
E.
消泡剂
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皮皮学刷刷变学霸
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【简答题】here us take long it didn’t to get
【单选题】听力原文：M: I think we'll be late this time. W: If only it didn't take so long to drive there. Q: What does the woman mean? (18)
A.
She wishes it were quicker to get there.
B.
It would be better if they didn't drive there.
C.
Before, it didn't take so long to get there.
D.
They'll drive there even though it's far.
【简答题】图示为三种不同材料的拉伸曲线(试样尺寸相同),试比较这三种材料的抗拉强度、屈服强度和塑性大小,并指出屈服强度的确定方法。
【单选题】It didn’t take the children long to________ the correct answer.
A.
carry out
B.
figure out
C.
turn out
D.
give out
【简答题】阅读理解。 It didn’t take long at all for me to decide to come and study in the UK. With the approach of globalization, more and more people realize that it is necessary to study in an English-speaking cou...
【单选题】He easily adapts to new situations and it didn't take a long time to _____ with his new job. [ ]
A.
fit in
B.
calm down
C.
keep up
D.
get away
【简答题】Oncethey got the opportunity, it didn’t take them long to get the hang of it .A. takehold of it B. becomeskilled in it
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