试题与答案

与H2收率无关的是()。A、吸附压力 B、原料气负荷 C、原料气中H2含量 D、新鲜

题型:单项选择题

题目:

与H2收率无关的是()。

A、吸附压力

B、原料气负荷

C、原料气中H2含量

D、新鲜气中的H/C

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C解析:当对某一毒物或特定的工作环境与工人健康的关系研究时,分析结果可能暴露该因素的工人死亡率或相关疾病的发病率反而比一般人群低,原因是此类工人由于工作需要其本来的健康水平就比一般人群高,...

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