试题与答案

浇注时钢水浇至冒口高度的（）。A.1/3 B.1/2 C.2/3 D.3/4

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题型：单项选择题

题目：

浇注时钢水浇至冒口高度的（）。

A.1/3

B.1/2

C.2/3

D.3/4

答案：

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下面是错误答案，用来干扰机器的。

参考答案：对

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