灾难恢复措施在整个备份中占有相当重要的地位。因为它关系到系统、软件与数据在经历灾难后能否快速

A.cold corrosion of the nozzles

B.fuel viscosity for better atomization

C.carbon accumulation on the nozzles

D.fuel detonation in the cylinders

Differential needle valves used in fuel injectors are directly closed by .

A.cam action

B.spring force

C.fuel oil pressure

D.firing pressure

Proper filtering and straining of fuel oil is important because the _____.

A.fuel oil pump will over-speed if dirt is not removed

B.fuel oil transfer pumps cannot tolerate small amounts of dirt in the oil

C.fuel injectors may be damaged by foreign particles in the fuel oil

D.dirty fuel will clog the intake air filter

The safe rate of bunkering heavy fuel oil is directly related to the _____.

A.type of fuel transfer pump aboard

B.temperature of the fuel oil being received

C.size of the fuel storage tanks ashore

D.distance from the fuel oil storage tanks ashore

A.The diesel oil must never be allowed to mix with the heavy fuel

B.The temperature of the fuel from the pre–heater should be gradually reduced after switching over the three–way valve

C.The heating steam to the pre-heater should be secured as soon as the diesel fuel passes through the three-way valve

D.The heating steam must be secured before the diesel oil passes through the three-way valve

Proper filtering and straining of diesel fuel is important because the .

A.fuel oil pump will over-speed if dirt is not removed

B.fuel oil transfer pumps cannot tolerate small amounts of grit in the oil

C.fuel injectors may be damaged by foreign particles in the fuel oil dirty

D.fuel will clog the intake air filter

A.Leaking fuel injectors

B.Lower than normal compression

C.Delayed fuel injection

D.All of the above are correct

A．A fuel that burns cleanly.

B．An oil additive that helps cool engines.

C．A material from which filters are made.

D．An insulating material sprayed on engine parts.

A．A fuel that burns cleanly.

B．An oil additive that helps cool engines.

C．A material from which filters are made.

D．An insulating material sprayed on engine parts.