Black smoke coming from a boiler can be caused by （）.<br>A:low water level<br>B:high water level<br>C:excessively high fuel pressure<br>D:low oil temperature

Black smoke coming from a boiler can be caused by （）.
A:low water level
B:high water level
C:excessively high fuel pressure
D:low oil temperature

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:【10252937】个 (题库试题定时更新)