下列说法正确的是{"A":"\u6c2f\u6c14\u7684\u6469\u5c14\u8d28\u91cf\u4e3a71","B":"\u5c06\u6807\u51c6\u72b6\u51b5\u4e0b1

题干

下列说法正确的是（　　）

A：氯气的摩尔质量为71

B：将标准状况下11.2L的HCl溶于1.0L的水中，所得溶液中HCl的浓度为0.5mol/L

C：常温常压下，等体积的CO和H₂的质量比为1：1

D：物质的摩尔质量（以g．mol^﹣1为单位）在数值上等于其相对分子质量或相对原子质量

上一题下一题 0.0难度选择题更新时间:2016-06-13 05:34:42

D

B

Happy Middle School

We're a bilingual(双语的) school for children of 6～15.We want a cook，a library assistant, a sports coach and a language teacher.

Jobs	Ages	Languages	Skills(技能)	Others
cook	25～40	Chinese	can cook Chinese and Western food	healthy
library assistant	20～35	Chinese， English	can read different kinds of books	careful
sports coach	20～40	Chinese, English	major in(主修) P．E.	healthy and strong
language teacher	—	Chinese, English	major in English	—