When the fuel oil is burning in the combustion chamber, it （）.

相似题目

• The amount of expansion space to be left in a fuel tank when fuel oil is being received, is determined by the （）.

  A . quantity of fuel to be received B . flash point of the fuel as it is received C . fuel temperature as it is received D . viscosity of the fuel being received

  查看最佳答案

• In a typical fuel system, the oil is stored in （） in the double bottom.

  A . setting tanks B . service tanks C . tanks D . drain tank

  查看最佳答案

• The ash content of a fuel oil is significant to the operating engineer because it （）

  A . is an indication of the amount of noncombustible material present in the oil B . indicates the quantity of energy released by burning a unit amount of the fuel C . is useful for determining proper atomization temperatures D . reflects the overall thermal efficiency of the fuel oil service system

  查看最佳答案

• What color exhaust will be exhibited when a slow speed two-stroke/cycle main propulsion diesel engine, designed to operate on light and heavy fuel oil, is operated on insufficiently preheated heavy fuel oil?（）

  A . White B . Black C . Blue D . Clear

  查看最佳答案

• Which of the substances listed is satisfactorily removed from the fuel by a centrifugal oil purifier?（）

  A . Impurities B . Lube oil C . Gasoline D . Diesel fuel

  查看最佳答案

• When fuel oil is accidentally missed with lube oil which of the following processes can be used to separate them?（） Ⅰ.filtering Ⅱ.settling

  A . Ⅰ only B . Ⅱ only C . either Ⅰ or Ⅱ D . neither Ⅰ or Ⅱ

  查看最佳答案

• When you are transferring fuel oil to the setting tanks, precautions to be observed should include （）

  A . plugging gooseneck tank vents to prevent accident overflow B . maintaining a high transfer rate until a slight trickle of oil is observed flowing from the overflow line C . sounding the tanks frequently and reducing the transfer rate as the level approaches maximum fill D . maintaining a supply of chemical dispersant to cleanup minor oil spills adjacent to the shi

  查看最佳答案

• When centrifuging heavy fuel oil, an important factor to consider is the （） (1) flow rate (2) viscosity of the fuel oil

  A . (1) only is correct B . (2) only is correct C . both (1) and (2) are correct D . neither (1) or (2) are correct

  查看最佳答案

• Heat for igniting the fuel oil in the cylinder of a diesel engine is generated by the （）

  A . electronic ignition system B . compression of air by the piston C . friction in the fuel injector D . fuel oil bearing system

  查看最佳答案

• When comparing different fuels for different engines, the ignition quality of diesel fuel oils becomes a less critical consideration as （）

  A . the amount of lube oil additives increase B . piston speeds increase C . injection pressure decrease D . engine speeds decrease

  查看最佳答案

• Fuel oil is pumped by means of （） from the bunker tanks.

  A . a transfer pump B . a bilge pump C . a service pump D . a vacuum pum

  查看最佳答案

• The specific gravity of fuel oil is a （）.

  A . absolute value B . relative value C . constant value D . set value

  查看最佳答案

• The temperature of the fuel oil received during bunkering operations is critical in determining the（）

  A . expansion space to leave in a tank B . flash point at which the fuel will burn C . temperature to which the fuel must be heated D . rate at which the fuel can be pumped during transfer operatio

  查看最佳答案

• Which of the following problems may occur when using fuel oil with a high sulphur content?（）

  A . Injection lag B . Lube oil dilution C . Pre-ignition D . Corrosio

  查看最佳答案

• A dirty fuel oil filter is can be detected by （） Ⅰ.fuel oil analysis Ⅱ.observing the pressure drop across the filter

  A . Ⅰonly B . Ⅱonly C . eitherⅠorⅡ D . neitherⅠnor

  查看最佳答案

• Fuel oil discharged to the diesel engine cylinder is atomized at the （）

  A . turbocharger B . injection nozzle tip C . carburetor D . fuel oil pum

  查看最佳答案

• The fire of fuel oil is classified as（） fire.

  A . Class A B . Class B C . Class C D . Class D

  查看最佳答案

• Fuel oil is regularly transferred to the day tank in order to （）

  A . allow impurities to settle out of the fuel B . allow air to escape from the fuel C . make fuel available for immediate use D . all of the above

  查看最佳答案

• 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

  查看最佳答案

• The percentage of impurities in a specific fuel oil sample is determined by （）.

  A . settling in a fuel tank B . testing in a laboratory centrifuge C . burning in a calorimeter D . testing in a closed cu

  查看最佳答案

• Your vessel is taking on fuel oil when a small leak develops in the hose and you have ordered the pumping stoppedBefore resuming pumping，you should（）.

  A . notify the terminal superintendent B . place a large drip pan under the leak and ping the scuppers C . repair the hose with a patch D . replace the hose

  查看最佳答案

• 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 tank B . a collecting tank C . a sump D . a settling tank

  查看最佳答案

• When the heavy fuel oil is heated to achieve the viscosity of 10-15 cSt, may occurTo avoid this, a system is used in most occasions.

  A.boiling and cavitations; low temperature B.boiling and cavitations; pressurized C.leaking and boiling; low temperature D.leaking and boiling; pressurized

  查看最佳答案

• In purification, there is no fuel oil in the clean oil outlet.It could be caused by _____. I.too high temperature of the dirty fuel oil; II. too low temperature of the dirty fuel oil; III. Clogged filter

  A．I B．I．II．III C．II．III D．II

  查看最佳答案