The successful operation of any engine or machine and （） depend on effective lubrication.

[单选题]F．or a continuous operation diesel engine, a duplex filter unit would be the best arrangement becauseA．changing filter elements would not interrupt engine operationB．filtering occurs twice in each pass of oil through the systemC．clogging will not occ

[单选题]For a continuous operation diesel engine, a duplex filter unit would be the best arrangement because （）.A . changing filter elements would not interrupt engine operationB . filtering occurs twice in each pass of oil through the systemC . clogging wil

[单选题]While engine is in operation the piston moves up and down, thus causing the rotation of the （）.A . crankcaseB . slipperC . cam housingD . crankshaft

[单选题]In any diesel engine closed freshwater cooling system, the lowest pressure exists at the （）.A . jacket water outletB . cooling water pump outletC . heat exchanger outletD . expansion tank atmospheric vent

[单选题]Immediately after any diesel engine is started, the engineer should check the （）A . crankcase pressureB . lube oil pressureC . saltwater pressureD . exhaust temperature

[单选题]B．ased on the laser operation treatment of three patients。what can we infer from the passage?A．Laser light treatment is safe and effective．B．Laser light treatment is dangerous and ineffectiveC．Laser light treatment still requires much more studies．D．

[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]Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.A . temperatureB . pressureC . engine speedD . all of the above

[单选题]A（ ）is able to attend to any of the procedural anddocumentary procedure on

[单选题]A（ ）is able to attend to any of the procedural anddocumentary procedure on