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【单选题】
所示一重锤从木桩顶 0.5m 的高度自由落下,若在桩顶放置一橡皮垫,其他条件不变,则被冲击结构木桩的 。A.
动应力和动变形均减小
B.
动应力和动变形均增加
C.
动应力减小，动变形增加
D.
动应力增加，动变形减小
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皮皮学刷刷变学霸
举一反三
【简答题】We have nothing to declare.
【单选题】Passengers may ________ the "Goods to Declare Channel" or the "Nothing to Declare Channel" according to their individual cases.
A.
define
B.
forget
C.
know
D.
choose
【简答题】I have nothing to declare.（英译汉）
【简答题】The writer would be less critical if fashion designers placed more stress on the ________ of clothing. A) cost B) appearance C) comfort D) suitability
【单选题】Establishment of the "Something to Declare" Channel and the "Nothing to Declare" Channel ______ whether the passenger's luggage needs customs declaration or not.
A.
on the basis of
B.
bases on
C.
basic on
D.
base on
【单选题】The writer would be less critical fashion designers placed more stress on the ______ of clothing.
A.
cost
B.
appearance
C.
comfort
D.
suitability
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