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

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

• The FIRST course of action in fighting a fire in a cargo or fuel oil tank is to （）.

  A . secure all openings to the tank B . discharge an initial charge of CO with a hand portable extinguisher C . direct a fire hose into the tank and energize the fire main D . spray the tank boundaries with a fire hose to promote cooling

  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

• The treatment of the fuel oils involves storage, heating, filtering and（）

  A . centrifuging B . pressurizing C . atomization D . igniting

  查看最佳答案

• Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.

  A . under high pressure B . under low pressure C . heated to reduce viscosity D . cooled to increase viscosity

  查看最佳答案

• Which of the following is a factor of fuel oil almost having nothing to do with the formation of combustion products?（）

  A . setting point B . ash C . sulfur content D . carbon residue

  查看最佳答案

• The oil is drawn from a drain tank through （）, one of a pair of pumps, into one of fine filters.

  A . a strain tank B . a head tank C . a service tank D . a strainer

  查看最佳答案

• The FIRST step to take in fighting an engine room fire resulting from a ruptured fuel oil service line, is to （）.

  A . evacuate all engine room personnel B . fight the fire with hand portable extinguishers C . activate the main CO bank D . stop the flow of leaking fuel oil

  查看最佳答案

• After changing out the fuel filters the diesel engine fails to restart, the most probable cause for this condition is a/an（）.

  A . low compression B . air-bound fuel system C . improper spark D . change in viscosity

  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

• Obviously, for a given fuel oil, its pour point is （） its cloud point.

  A . lower than B . higher than C . as same as D . better tha

  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

• Clogged diesel engine fuel oil filters can cause（）

  A . loss of power B . misfiring C . low fuel oil pressure 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

• A dirty diesel engine oil filter element can best be detected by （）.

  A . visual inspection of the elements B . the pressure drop across the filter C . high lube oil sump temperature D . decrease in oil viscosity from the 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