问题
单项选择题
美制线规的16号线相当于标称截面:()。
A.0.8
B.1.0
C.3.0
答案
参考答案:B
美制线规的16号线相当于标称截面:()。
A.0.8
B.1.0
C.3.0
参考答案:B
用所给下列词汇的适当形式选词填空10分:
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