Oil pressure in the lubrication system is （） the static sea water head to ensure that sea water （） the stem-tube.

[单选题]The oil quantity for bearing lubrication should be applied in such an amount as to be sufficient to carry away the （） caused by the friction at the bearings.A . acidsB . additivesC . heatD . gear

[单选题]In a bypass type lubrication system for a diesel engine, the dirty oil line to the centrifuge should be taken from the （）.A . lube oil pump suction lineB . lube oil pump discharge lineC . bottom of the lube oil sumpD . outlet from the lube oil header

[单选题]Cylinder lubrication oil for low speed main propulsion diesel engines is admitted to each cylinder during （）.A . the power strokeB . the compression strokeC . low load operation onlyD . periods of standby

[单选题]Loss of lubricating oil pressure to the main propulsion diesel engine will actuate a/an _____.A．over-speed tripB．audible/visual alarmC．the ships/boats general alarmD．reserve oil storage tank

[单选题]Loss of lubricating oil pressure to the main propulsion diesel engine will actuate a/an （）.A . overspeed tripB . audible/visual alarmC . the ships/boats general alarmD . reserve oil storage tank

[单选题]In a typical fuel oil system, the oil is stored in tanks in the double bottom from which it is pumped to （） and heated.A . a service tankB . a collecting tankC . a sumpD . a settling tank

[主观题]What causes the lube oil pressure of the engine to drop ?

[单选题]The fuel oil pressure and forced draught pressure should be matched to ensure good combustion with a full steady flameIn the sentence the word “match” means （）A . join withB . mixC . be equal toD . be constant

[单选题]As a high pressure system approaches，the barometer reading（）.A . stays the sameB . fallsC . risesD . falls rapidly

[单选题]In the （） pressure charging system the pulse of energy that occur as the exhaust is released from the cylinder to improve the output of the turbocharger.A . constantB . pulseC . highD . none of the above