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【单选题】
在冲压过程中，需要最小变形力个相对的弱区，材料变形时，首先变形区为【 】A.
已变形区
B.
强区
C.
传力区
D.
弱区
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】Mary
realized she _______A. was playing o joke about B. was fun C. was being made fun of D. was made fun
【单选题】Mary realized she _________.
A.
was making fun of
B.
was made fun
C.
was being made fun of
D.
was being made fun
【单选题】It was only after she had read the papers _______ Mary realized the homework before her was extremely difficult to complete.
A.
when
B.
that
C.
which
D.
what
【单选题】When Mary was in hospital, the couple realized that______.
A.
they had to put their plan into practice
B.
health was more important than wealth
C.
heart trouble was a serious illness
D.
they both needed to stop working
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