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（）extinguish oil and electrical fires with water.
- A、Do
- B、Did
- C、Never
- D、Isn’t
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Dry powder is used to put out ________A.electrical fireB.oil fireC.common firesD.all kinds of fires
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One of the disadvantages of using carbon dioxide to extinguish a fire in an enclosed space isA.the 'snow' which is sometimes discharged along with the gas is toxicB.prolonged exposure to high concentrations of CO2 gas causes suffocationC.rapid dissipation of the CO2 vaporD.the CO2 gas is lighter than air and a large amount is required to extinguish a fire near the deck
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Which system should be supplied to obtain the best efficiency and lowest emissions?A.Lean combustion principleB.Fuel oil systemC.Electrical control systemD.Electronic control system
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Cargo transfer operations on a tank vessel need NOT be stopped when ______.A.a tug comes alongside while the tanker is loading grade D and E cargoesB.a large，fresh oil spill is discovered immediately adjacent to the side of the tankerC.there is an electrical storm in the vicinityD.there is a fire on the dock or on a nearby vessel
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Loran-C is which type of system ________．A.Reflected electronB.Electrical radiationC.Quarterpoint electrical navigationD.Hyperbolic radio navigation
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OIL-IN-WATER are ______．A.sediment of oil in waterB.oil dissolvents in waterC.solid oil aggregatesD.droplets of oil suspended in water
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An important step in fighting any electrical fire is to ______.A.stop ventilationB.stop the vesselC.de-energize the circuitD.apply water to extinguish the fire
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How does foam extinguish an oil fire ?______.A.By cooling the oil below the ignition temperatureB.By removing the fuel souce from the fireC.By excluding the oxygen from the fireD.By increasing the weight of the oil
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单选题One disadvantage of using regular dry chemical (sodium bicarbonate) in firefighting is that（）.A
it can break down under high heat and emit noxious fumesB
it will decompose under prolonged storage and lose its effectivenessC
fire has been known to flash back over the surface of an oil fireD
it is ineffective in fighting fires in high-voltage electrical equipment
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单选题Never extinguish oil and electrical fires with （）.A
waterB
foam extinguisherC
CO2 extinguisherD
portable extinguisher
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单选题When a rescuer finds an electrical burn victim in the vicinity of live electrical equipment or wiring，his first step is to（）.A
flush water over any burned area of the patientB
apply ointment to the burned areas on the patientC
get assistance to shut down electrical power in the areaD
remove the patient from the vicinity of the live electrical equipment or wiring
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单选题Cargo transfer operations on a tank vessel need NOT be stopped when（）.A
a tug comes alongside while the tanker is loading gradeB
and E cargoes B. a large，fresh oil spill is discovered immediately adjacent to the side of the tankerC
there is an electrical storm in the vicinityD
there is a fire on the dock or on a nearby vessel
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单选题What type of oil is not covered in the oil pollution law?（）A
mineral oilB
machinery oil being transferred for shipboard useC
crude oil unrefinedD
normal bilge oil and water
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单选题In general, the oil mist detectors include a built-in heating unit and a compact plug for electrical connectionThe function of heating unit is to （）A
avoid false alarms as a result of condensing water vaporB
avoid danger of frost under very cold weatherC
reduce the viscosity of the crankcase atmosphere in order to improve the fluidityD
keep the temperature of the oil mist detectors in an appropriate range
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单选题An important step in fighting any electrical fire is to（）.A
stop ventilationB
stop the vesselC
de-energize the circuitD
apply water to extinguish the fire
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单选题Which of the following conditions indicates the dilution of diesel engine lube oil by fuel oil?（）A
Water discharging from the water outlet of the lube oil purifierB
Fuel oil discharging from the water outlet of the lube oil purifierC
Lube oil discharging from the water outlet of the lube oil purifierD
A change in the lube oil viscosity
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单选题To extinguish an electrical fire, you should use （）.A
mechanical foamB
chemical foamC
carbon dioxideD
soda acid
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单选题The four basic components of a fire are fuel, heat, oxygen and a chain reactionWhich of the following statements best describes what must be eliminated to extinguish a fire?（）A
Any one component can be eliminated to extinguish a fireB
Any two components must be eliminated to properly extinguish a fireC
Any three components must be eliminated to properly extinguish a fireD
Ali four components must be eliminated to extinguish any fire
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单选题An advantage of a dry chemical over a carbon dioxide fire extinguish is its（）.A
greater rangeB
effective on all types of firesC
cleanlinessD
All of the above
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单选题During the PSC inspection, under the provisions of SOLAS 74, which one may not be regarded as clear grounds for ships’ detainment?（）A
failure of the proper operation of the main steering gearB
failure of the proper operation of electrical installationsC
leakage of domestic water pumpD
insulation of exhaust pipes in engine room contaminated by oil
考题
单选题Except in rare cases，it is impossible to extinguish a shipboard fire by（）.A
removing the heatB
removing the oxygenC
removing the fuelD
interrupting the chain reaction
考题
单选题An ABC dry chemical fire extinguisher would be LEAST effective against a fire in（）.A
a mattressB
spilled liquids such as oil or paintC
high voltage electrical gearD
a trash can
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