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乙烷毒性>丁烷毒性（）

单选题

2021-12-24 20:21

A、在碳原子相同的情况下直链饱和烃>支链饱和烃
B、随着碳原子数目增加，麻醉作用增强
C、9个碳原子以上毒性减弱
D、有机磷结构式中的2-乙基被2-乙氧基取代后毒性增强
E、成环的烃类毒性>不成环的毒性

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正确答案

B

试题解析

标签：第四单元公卫执业医师综合笔试

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