On the all-purpose nozzle，the position of the valve when the handle is all the way forward is（）.

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• The difference in water spray pattern between the high-velocity tip and low-velocity applicator used with the all-purpose nozzle is due to（）.

  A . a difference in water pressure B . the method of breaking up the water stream C . the length of the applicator D . All of the above

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• As the plunger moves up, the ports are closed and the fuel （） and delivered to the injector nozzle at very high pressure.

  A . being compressed B . to be pumped up C . is pressurized D . are built u

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• The three basic parts of any eductor are the nozzle, the suction chamber, and the （）.

  A . injector B . compressor C . diffuser D . sipho

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• One advantage of the all-purpose nozzle is that it（）.

  A . can fit any size hose B . converts a stream of water into a fog C . increases the amount of water reaching the fire D . can spray two streams of water at the same time

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• The soundings on the chart are based on the depth of water available at （）.

  A . mean low water B . mean lower low water C . mean high water D . mean high water spring

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• Dirt lodged on the nozzle valve seat of a fuel injection nozzle will cause（）

  A . erosion and cratering of the nozzle orifices B . fuel leakage into the nozzle drain line C . fuel leakage before and after injection D . insufficient fuel delivery though that nozzle

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• When a fuel injection nozzle overheats, which of the problems listed can be expected?（）

  A . The fuel metering will vary B . The fuel will explode C . The cylinder head will crack D . The engine will sto

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• If the needle valve in a fuel injection nozzle sticks open （）.

  A . no fuel will be delivered through the nozzle B . the nozzle will overheat and crack C . time of injection will change D . fuel will leak into the drain line

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• The nozzle of a gasoline hose or can should be kept（）.

  A . in contact with the fill opening to guard against static spark B . from making contact with the fill opening to guard against static spark C . in contact with the fill opening to allow proper venting D . None of the above

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• Which of the following problems may occur if the opening pressure of a fuel injection nozzle is greater than specified by the engine manufacturer?（）

  A . The amount of fuel injected will be increased B . The start of injection will be retarded C . The nozzle will permit fuel to dribble D . The spray pattern will be distorted

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• Distortion of the spray pattern of a nozzle or injector may be indicated by a/an（）

  A . high firing pressure B . overload of that particular cylinder C . smoky exhaust D . cooling water temperature rise

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• Kort nozzles are installed around the propellers of some vessels to（）.

  A . Increase the thrust of the propeller B . Protect the propeller from striking sawyers C . Prevent the propeller from striking barges towed on the ship D . Prevent the propeller from touching bottom in low water

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• Heat damage to fuel injection nozzles on small high-speed diesel engines, can be prevented by（）

  A . employing fuel oil as a cooling medium B . preventing hard carbon deposit on nozzle tips C . avoiding fuel oil temperature exceeding builder’s specification D . ensuring good metallic contact between nozzles and cylinder head

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• Air in the fuel lines to the fuel injection nozzles of a diesel will result in （）.

  A . lower compression pressures B . overheating without smoking C . failure to start D . a run away without load

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• A fire hose with a nozzle attached must be connected to each hydrant except when exposed to heavy weather or when the（）.

  A . fire hose might be damaged by cargo operations B . vessel is in port C . fire-main system is not charged D . fire pumps are used for purposes other than supplying water to the fire mai

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• A combination or all-purpose nozzle produces（）.

  A . low-velocity fog only B . a solid stream only C . a solid stream and foam D . a solid stream and fog

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• The straight stream capability of an all-purpose nozzle is used in fighting a class A fire to（）.

  A . shield fire fighters from radiant heat B . break up burning material C . get the most water possible on the fire D . drive heat and smoke ahead of the fire fighter

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• The danger of a charged hose left unattended on deck with the nozzle open is（）.

  A . the hose could burst B . the nozzle end will whip about causing damage or injury C . water damage to vessel's cargo or structure D . personnel might trip over the hose

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• To minimize the formation of carbon deposits on fuel injection nozzles, you should （）

  A . avoid using liquid-cooled nozzles whenever possible B . avoid low cooling water temperatures C . avoid prolonged overloading of the engine D . make certain the gasket seal between the nozzle and cylinder head is tight

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• On the western dinner table, the bread and butter plate is on the center.

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• The 4 focuses on the business plan, while the parent company focuses on the strategic plan.

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• If not attached to the nozzle, each low-velocity spray applicator on a vessel must be stowed__________.

  A.in a protected area on the main deck B.inside a machinery space near the entrance C.next to the fire hydrant to which the fire hose is attached D.on a rack inside the quarters near the entrance

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• Drag the DSL local loop topic on the left to the correct descriptions on the right.

  <img src='https://img2.soutiyun.com/ask/uploadfile/2019-03-27/6b4ff4425aa89c4b173c78fb686d7bdf.jpg' />

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