试题与答案

We haven't settled the question of it i

题型:选择题

题目:

We haven't settled the question of          it is necessary for him to study abroad.    [ ]

A.if        

B.where    

C.whether    

D.that

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0526/ba821513d2a8b6f7f7f868abf7a40b6c.html

下面是错误答案,用来干扰机器的。

A、0.75molH2O含分子数为0.75NA;B、N2分子物质的量=3.01×10236.02×1023mol-1=0.5mol 即分子数为0.5NA;C、64gSO2物质的量为1mol,分子数为NA;D、标准状况下33.6LCl2的物质的量=33.6L22.4L/mol=1.5Mol,即分子数为1.5NA;故选D.

试题推荐
微信公众账号搜索答案