A.speed, torque, and horsepower production
B.firing order, valve timing, and valve lift
C.fuel consumption, efficiency, and cylinder pressure
D.scavenge pressure, compression ratio, and exhaust pressure
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A.maintain low pH in the cooling water
B.reduce the cooling water temperature
C.increase cooling water hardness
D.form a protective film on metal surfaces
A.prolong the ignition delay period
B.ensure the beginning of fuel injection
C.thoroughly utilize the air charge
D.allow controlled fuel combustion
A.deliver proper fuel quantity to the injection nozzle
B.provide rapid fuel injection cutoff
C.control fuel quantity entering the pump body
D.control fuel pressure delivered to the combustion chamber
A.of a material harder than the cylinder liner
B.properly lubricated
C.prevented from compressing
D.prevented from rotating during engine operation
A.pre-injection fuel oil treatment
B.lube oil filtration
C.lube oil purification
D.piston cooling
最新試題
The main purpose of port State control is not to（）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
The shipboard oil pollution emergency plan will be invalid after （）
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
If separating effect is not good, which measure should be taken （）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
Which of the following items don’t belong to dock repair works?（）
（） is not installed on the main switchboar.