Before "stand-by" is rung on the engine telegraph, it is usual to give the main engine （） ahead and astern.

[单选题]B．efore "stand by" is rung on the engine telegraph, it is usual to give the main diesel engine a brief trial ahead and astern.A．with powerB．on powerC．with airD．on air

[单选题]"Stand by an engine" meansA．"prepare to stop the engine"B．"assemble an engine on its bedplate"C．"make an engine ready for starting"D．"dismantle an engine"

[单选题]“Stand by an engine” means （）A . “prepare to stop the engine”B . “assemble an engine on its bedplate”C . “make an engine ready for starting”D . “dismantle an engine&rdquo

[单选题]“Stand by engine” means （）.A . prepare to stop the engineB . assemble an engine on its bedplateC . make an engine ready for startingD . make an engine run steadily

[单选题]B．efore starting the engine, the air bottle should be ____.A．pumped upB．loadedC．dischargedD．closed

[单选题]Before hydraulic starting of an engine on a covered lifeboat，what need NOT be checked?（）A . Fuel supply line valveB . Pressure registered on the accumulator gaugeC . Cold-spark voltage readings test lampD . Engine stop control

[单选题]About half an hour before the engine is required, cooling water at （） must be circulated.A . more than the working temperatureB . less than the working temperatureC . the working temperatureD . the same as the surrounding temperature

[单选题]Before a marine diesel engine is started the cylinders and pistons must be （）.A . cooled to appropriate temperatureB . warmed up gradually to appropriate temperatureC . opened up and renewedD . ground and polished

[单选题]The diesel engine must be started before it can run by it self For this purpose （） has to be used.A . a starting systemB . the starting airC . a starting operationD . A, B and C

[单选题]Before starting the engine the air bottle should be （）.A . pumped upB . loadedC . dischargedD . opened