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问题
单项选择题
C级钢、E级钢钩尾框一侧弯曲大于3mm时加热后()
A.焊修
B.补焊
C.调修
答案
参考答案:
C
选择题
—______ is it from your school to the zoo?
—It's about six miles.
A. How much
B. How many
C. How long
D. How far
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判断题
随附单据:按实际提供的单据,在对应的窗口打“√”。( )
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