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【单选题】
改进弯曲件的设计，不是减少回弹的具体措施是（）。A.
尽量避免选用过大的相对弯曲半径
B.
尽量选用σS/E小，力学性能稳定和板料厚度波动小的材料。
C.
在弯曲工艺方面，减小回弹最适当的措施是采用校正弯曲
D.
尽量避免选用过小的相对弯曲半径
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皮皮学刷刷变学霸
举一反三
【单选题】In the writer's opinion it would be better if people ______.
A.
were forced to take a diploma
B.
were free to become educated in their own way
C.
attended more practical courses
D.
attended courses intended for experts
【单选题】Tens of thousands of 18-year-olds will graduate this year and be handed meaningless diplomas. These diplomas won't look any different from those awarded their luckier classmates. Their validity will b...
A.
view point on learning.
B.
a qualified teacher.
C.
the importance of examination.
D.
the generation gap.
【简答题】Diplom- Kaufmann
【单选题】If he had known your telephone number, he you last week.
A.
could have called
B.
had called
C.
would call
D.
have called
【单选题】输送系统的管路特性方程可表示为H e =K+BQ e 2 ,则( )。
A.
K只包括单位质量的流体需增加的位能
B.
K 包括单位质量的流体需增加的位能和静压能
C.
BQ e 2 代表管路系统的局部阻力损失
D.
BQ e 2 代表单位质量的流体需增加的动能
【简答题】Diplom- Ingenieur(in)
【简答题】游客发生骨折事件,导游人员应该采取哪些急救措施?
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