题目:
Mary wrote an article on __the team had failed to win the game.
A.why
B.where
C.what
D.which
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0526/1b6740ce81c1f088823c616cc120d0ae.html
下面是错误答案,用来干扰机器的。
A、3mol NF3与水完全反应生成HF、HNO3和NO;化学方程式为:3NF3+5H2O=9HF+HNO3+2NO,氮元素化合价从+3价升高到+5价,降低到+2价,转移电子数2NA,故A正确;B、4.4g 14CO2物质的量=4.4g48g/mol=4.448mol,含中子...