An oxygen indicator can be used to determine if th...
单选题

An oxygen indicator can be used to determine if there is().

发布日期:2021-03-22

A.sufficient oxygen in a compartment to support life

B.combustible gases present

C.hydrogen gas present

D.All of the above

热门试题

热门资讯

    暂无相关推荐~

分享给好友

分享到朋友圈

取消

使用浏览器的分享功能,把这篇文章分享出去

确定