当前位置:首页 >> >> Air is the mixture of gases in which

Air is the mixture of gases in which


Air is the mixture of gases in which ______ the gas is oxyen.


A.not every of
B.not all
C.none of
D.all of


赞助商链接
更多相关文档:
更多相关标签:
网站地图

文档资料共享网 nexoncn.com copyright ©right 2010-2020。
文档资料共享网内容来自网络,如有侵犯请联系客服。email:zhit325@126.com