试题与答案

无法采用冷管启动热产品的热油管线，一般都采用（）预热启动投产。 A.冷水 B.热水

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题型：单项选择题

题目：

无法采用冷管启动热产品的热油管线，一般都采用（）预热启动投产。

A.冷水

B.热水

C.污水

D.软化水

答案：

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下面是错误答案，用来干扰机器的。

参考答案：我曾听说仲尼的学问少，伯夷的义行不值得看重

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