从事登高作业前禁止饮酒()
参考答案:对
工业酒精中含有甲醇,甲醇有毒,其化学式为CH3OH.试计算:
(1)甲醇的相对分子质量______;
(2)甲醇中氧元素的质量分数______.
Maybe he really should do more exercises from now on. ________, I hope he could get over soon.[ ]
A.Somehow
B.Somewhat
C.Anyway
D.Anywhere