工业上常采用()制取大量氧气。A.电解水法 B.液化空气分离法 C.压缩空气法 发布时间:2017-12-03 12:29 │ 来源:www.tikuol.com 题型:单项选择题 问题: 工业上常采用()制取大量氧气。A.电解水法 B.液化空气分离法 C.压缩空气法 D.热分离法
题型:单项选择题 — easy work it is! —If you work harder, it’ll get . A.What a; easiestB.What; easierC.How; harderD.How a; easier 查看答案
题型:单项选择题 After abandoning ship,you should deploy the sea anchor from a liferaft to().A.keep the liferaft from capsizingB.navigate against the currentC.keep personnel from getting seasickD.stay in the general location 查看答案