A.inevitable
B.harmful
C.helpful
D.unacceptable
您可能感興趣的試卷
你可能感興趣的試題
A.increase in temperature
B.lose its energy partly
C.expand and do work
D.begin to be compressed
A.a modern diesel engine；a turbine wheel
B.a modem diesel engine；exhaust gases
C.a compressor；an exhaust gas turbocharger
D.a compressor；a turbine wheel
A.the supply of normal air and removal of compressed air
B.the supply of fuel oil and combustion of the atomized oil
C.the supply of fresh air and removal of exhaust gases
D.the supply of fresh air and removal of the extra heat
A.the use of a poor quality oil
B.the deterioration of its properties
C.the formation of deposits
D.the reduction in heat transfer ability
A.lubricating
B.cooling
C.cleaning
D.neutralizing
最新試題
Which of the following items don’t belong to dock repair works?（）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
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（）
To proceed to the assistance of a ship in distress is（）
Diesel engine air start system check valves are opened by （）
The condensers located in various stages of a flash evaporator are cooled by（）
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）