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【单选题】
桥梁上部结构顶推法施工中，导梁设置的长度一般为顶推跨径的（）倍，刚度为主梁的（）。A.
0.6～0.8，1/9～1/15
B.
0.6～0.8，1/8～1/10
C.
0.5～0.6，1/9～1/15
D.
0.5～0.6，1/8～1/10
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【单选题】听力原文：W: Hi, Xiao Wang. What are you going to do this weekend? M: I've no idea. What about you? W: How about going out for some exercises? M: Good idea! W: Do you like to play tennis? M: You've just fo...
A.
Hobbies.
B.
Weekend arrangements.
C.
Table tennis.
D.
Tennis.
【多选题】How do we play table tennis?
A.
allow a ball played toward them to bounce one time on their side of the table
B.
return it so that it bounces on the opposite side at least once
C.
spinning the ball to limit the opponent's options
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