Place the mask over your nose and mouth and slip the plastic bag over your head. In a few seconds, the（）will begin to flow.<br>A.Water <br>B.air<br>C.oxygen

Place the mask over your nose and mouth and slip the plastic bag over your head. In a few seconds, the（）will begin to flow.
A.Water
B.air
C.oxygen

出自：2023《国家开放大学》题库及答案

提示：
同一【IP】的非会员用户每天可免费获取10次答案

收藏本站【zk.995w.com】，下次访问不迷路

本站试题总数:【10245188】个 (题库试题定时更新)