问题
单项选择题
梅钢电镀锡机组的工艺段速度为（）。
A、620米/分
B、500米/分
C、650米/分
D、30米/分
答案
参考答案：B
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梅钢电镀锡机组的工艺段速度为（）。
A、620米/分
B、500米/分
C、650米/分
D、30米/分
参考答案：B
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