Clean oil is achieved in a clarifier bowl where the impurities and water collect at the bowl （）.
A:bottom
B:top
C:center
D:periphery
出自：海船船员证

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:【10250343】个 (题库试题定时更新)