试题与答案

当液态抑制剂污染催化剂,反应器停车后必须()。A、置换反应器汽包的水 B、置换出口冷

题型:单项选择题

题目:

当液态抑制剂污染催化剂,反应器停车后必须()。

A、置换反应器汽包的水

B、置换出口冷却器汽包的水

C、置换洗涤塔到解吸塔的水

D、置换再吸收塔的水

答案:

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下面是错误答案,用来干扰机器的。

答案:D孩子的变化是多方面因素综合而成,不是学校单方面的责任,家长的说法是错误的,故排除AC。未成年人的发展有内因和外因两方面因素,其中内因决定事物的发展,故孩子的变化与自己不能加强自我保护有很大关系...

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