Keep compartment ______ as the gas given off can be dangerous.A.in good orderB.well cleanC.well ventilatedD.more room
Keep compartment ______ as the gas given off can be dangerous.
A.in good order
B.well clean
C.well ventilated
D.more room
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Keep compartment ______as the gas given off can be dangerous.A.well ventilatedB.well cleanC.in good orderD.more room
What best describes for how long a gas-free test is good ________．A.For as long as is indicated on the gas-free certificateB.For the instant that it is madeC.Until valves in line with the tank or compartment are reopenedD.Until changes in temperature or pressure affect the vapor content in the space
Which of the following statements is FALSE，concerning the regulations pertaining to the cylinder room of a fixed CO2 fire extinguishing system ________．A.The compartment must be properly ventilatedB.The temperature of the room should never exceed 130℉C.The door must be kept unlockedD.The compartment shall be clearly marked and identifiable
单选题Keep compartment （） as the gas given off can be dangerous.Awell ventilatedBwell cleanCin good orderDmore room
单选题If you must enter a room or compartment to combat the fire, keep an escape path （）.AopenBcloseCopensDcloses
单选题A fire of escaping liquefied flammable gas is best extinguished by（）.Acooling the gas below the ignition pointBcutting off the supply of oxygenCstopping the flow of gasDinterrupting the chain reaction
单选题Fire in an engine compartment is best extinguished with carbon dioxide gas (CO2) and by（）.Aclosing the compartment except for the ventilatorsBcompletely closing the compartmentCleaving the compartment open to the airDincreasing the air flow to the compartment by blowers
单选题Ambient temperature is the （）.Aamount of temperature rise with no loadBtemperature of the compartment where the motor is locatedCnormal operating temperature, less the room temperatureDamount of temperature developed by an operating motor
单选题The hot expanding gas rotates the blades of the exhaust turbine, thus （） a large of its power, （） drives the compressor.Ato give off；whichBgiving off；whichCto give off；thatDgiving off；that
单选题An oxygen indicator can be used to determine if there is（）.Asufficient oxygen in a compartment to support lifeBcombustible gases presentChydrogen gas presentDAll of the above
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单选题An inert gas system on a tanker should be used to（）.Aprevent the generation of flammable or combustible gas in tanksBblow out cargo lines to prevent gas concentrationsCdilute tank atmospheres to keep gas concentrations below the lower explosive limitDprevent fires in the pumproom by continually displacing flammable vapors
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