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【单选题】
在凸轮机构中的弹簧起到的作用是:A.
减震
B.
储存能量
C.
力闭合
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Please verify the type of this PDE .
A.
Hyperbolic
B.
parabolic
C.
elliptic
D.
mixed type
【单选题】How to be sensitive and considerate in business etiquette?
A.
Make a rapid judgment.
B.
Switch on the phone.
C.
Discuss business after stepping out of lift.
D.
Try to understand others from their point of view.
【单选题】Knowing what the business attire etiquette is when doing business in Great Britain means knowing all the business etiquette.
A.
True
B.
False
【单选题】____ is an important part of Japanese business etiquette.
A.
A longer shakehand
B.
A small kiss
C.
A hug
D.
Bowing
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