单选题When an engine is starting and has got a sufficiently high speed, say about 20 rpm,（）Athe starting air supply is cut off and fuel is injected into the cylindersBthe fuel feeding is cut off and the turning gear is put inCthe starting air supply is cut off and turning gear is taken outDthe electric blower is shut down and fuel is injected into the cylinders
单选题
When an engine is starting and has got a sufficiently high speed, say about 20 rpm,（）
A
the starting air supply is cut off and fuel is injected into the cylinders
B
the fuel feeding is cut off and the turning gear is put in
C
the starting air supply is cut off and turning gear is taken out
D
the electric blower is shut down and fuel is injected into the cylinders
参考解析
解析：
暂无解析
相关考题：
单选题AC C20网络型主机遥控系统中，在应急倒车情况下，遥控系统将有（）动作。 ①驾驶台和集控室ACP上显示“Crash Astern”； ②发出主机停车命令； ③发出主机倒车命令； ④主机转速下降到制动转速； ⑤对主机进行换向，换向结束后打开起动空气进行能耗制动、再强制制动； ⑥对主机进行换向，换向结束后打开起动空气进行强制制动； ⑦重起动和取消限制命令送至调速器，进行重起动，并取消各种限制； ⑧倒车转速达到油气切换转速时切断起动空气，调速器供油A①②③④⑥⑦B①②④⑤⑥⑧C②③④⑥⑦⑧D①②④⑥⑦⑧
单选题Why a gearbox is needed in a ship driven by a medium-speed diesel engine?（）ATo reduce the main engine speedBTo increase the main engine speedCTo govern the main engine speedDTo fix the propeller shaft
单选题In vessel construction，the garboard strake is（）.Alocated next to and parallel to the keelBlocated next to and parallel to the gunwaleCanother term for the bilge keelDanother term for the rub rail
单选题根据MLC公约，（）的表述正确。A在缔约国船上工作的海员必须有一份经签署的聘用书和劳动合同B海员在其受聘前应有机会对将任职的船及船上的人员详细了解，以便决定是否受聘C有关船东和海员必须各有一份海员就业协议的副本D船东应持一份载有海员在船上就业情况的记录，并可随时出示供检查
单选题STCW规则A部分规定轮机值班的所有成员除熟悉被指派的值班职责还应掌握（）A采取一切可能措施，防止污染海洋环境B从机器处所逃生的路线C驾驶台的所有命令应迅速执行D遵守有关国际公约，国家法规和当地规章
单选题规范规定，修理后的柴油发电机组安全系统试验应满足，报警装置模拟效用试验不少于（），大于220kW的发电柴油机在进行超速保护装置试验时，转速不得超过额定转速的（）。A2次/120%B2次/115%C3次/115%D2次/110%
单选题有一个二舱制船，当有两个舱破损进水后沉没，下列原因的说法哪种是不正确的（）。A吃水高于规定的分舱载重线B不是相邻的两个舱同时进水C吃水低于规定的分舱载重线D渗透率大于规定的渗透率