On a medium-speed main propulsion diesel engine, the crank-pin or crank journal bearings receive lubricating oil from （）.<br>A:a spindle lubricator<br>B:an oil jet<br>C:internal splashing<br>D:drilled passages in the crankshaft

On a medium-speed main propulsion diesel engine, the crank-pin or crank journal bearings receive lubricating oil from （）.
A:a spindle lubricator
B:an oil jet
C:internal splashing
D:drilled passages in the crankshaft

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)