实验室常用的气体钢瓶颜色分别是: ( ) -题库考试答案搜索网

实验室常用的气体钢瓶颜色分别是: ( )

单选题

2021-09-01 22:51

A、N2瓶蓝色, H2瓶黑色, O2瓶绿色
B、N2瓶黑色, H2瓶绿色, O2瓶蓝色
C、N2瓶绿色, H2瓶黑色, O2瓶蓝色
D、N2瓶黑色, H2瓶蓝色, O2瓶绿色

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正确答案

B

试题解析

标签：青书学堂河南城建学院安全工程物理化学

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逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

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