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【单选题】
两根相同截面、不同材料的杆件，受相同的外力作用，它们的应力( )。A.
相同
B.
不一定
C.
不相同
D.
无法判断
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反馈参考答案：
举一反三
【简答题】9. We'll be in New York (for,
from, on) three weeks.
【单选题】These students are quick at learning. We’ll have them __________ with new methods.
A.
training
B.
to train
C.
to be trained
D.
trained
【单选题】---We’ll study in different schools next year. Enjoy your time in the new school! ---______________.
A.
I’ll take your advice.
B.
The same to you
C.
Congratulations!
D.
Me too
【单选题】Our_________ contract is about to expire and we'll need to discuss a new one.
A.
certain
B.
current
C.
consuming
D.
comfortable
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