In order for the automatic lifeboat drain to operate properly（）.<br>A:the cap should be removed to drain the boat when it is waterborne<br>B:the cage must be free of rubbish or the ball may not seat properly<br>C:there is an automatic ball check located in a siphon tube<br>D:the small lever to release the rubber ball float must be turned counterclockwise

In order for the automatic lifeboat drain to operate properly（）.
A:the cap should be removed to drain the boat when it is waterborne
B:the cage must be free of rubbish or the ball may not seat properly
C:there is an automatic ball check located in a siphon tube
D:the small lever to release the rubber ball float must be turned counterclockwise

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:【10252701】个 (题库试题定时更新)