What kind of （）can be used for gas and chemical fires?A、equipmentB、apparatusC、extinguishersD、machines
What kind of （）can be used for gas and chemical fires?
- A、equipment
- B、apparatus
- C、extinguishers
- D、machines
相关考题：
What can we infer from the passage?A) Human can be totally replaced by machines in agriculture.B) We cannot see mechanization in Africa,C) As long as adaptations been made, mechanization will be used in agriculture in tropical area.D) The number of farmers who run a farm in America is less then thai of the farmer who run a farm of under developed countries.
What is special about the battery?A． It is built in an iPhone.B． It is the smallest of its kind.C． It can also be used as a charger.D． It keeps power for about 30 days.
An inert gas system on a tanker should be used to ______.A.prevent the generation of flammable or combustible gas in tanksB.blow out cargo lines to prevent the build up of gas concentrationsC.dilute tank atmospheres to keep gas concentrations below the lower explosive limitD.prevent fires in the pumproom by continually displacing flammable vapors
According to the Chemical Data Guide，what does ethyl chloride produce when ignited?A.Toxic fumes of oxides of nitrogenB.Toxic fumes of leadC.Poisonous phosgene gasD.Poisonous chlorine gas
What is NOT a function of the scrubber of an inert gas system ________．A.Cool the inert gasB.Remove particulate matter like sootC.Maintain pressure in the tanksD.Remove chemical impurities
What is NOT a requirement for the safe and effective use of a crude oil washing system ________．A.Strip all tanks and remove the bottom residueB.Use an inert gas system while washing tanksC.Use portable washing machines to reach areas obscured by structural members in the tanksD.Debottom the tank used as the source for the tank cleaning machines
You are planning to use the crude oil washing system on your tanker．What is required to prevent electrostatic buildup in the tanks ________．A.The portable machines should be set at the proper drop for the first wash before the fixed machines are usedB.The tank used as the source for the tank cleaning machines should be debottomed for at least one meterC.The inert gas system must reduce the oxygen content in the tank to at least 18%D.The fixed machines must be operated simultaneously with the portable machines to equalize the electrostatic potential
共用题干第三篇Why So Risky in Chemical FactoriesWhich is safer一staying at home,traveling to work on public transport,or working in the office?Surprisingly,each of these carries the same risk,which is very low. However,what about flying compared to working in the chemical industry?Unfortunately,the former is 65 times riskier than the latter!In fact,the accident rate of workers in the chemical industry is less than that of almost any of human activity,and almost as safe as staying at home.The trouble with the chemical industry is that when things go wrong they often cause death to those living nearby.It is this which makes chemical accidents so newsworthy.Fortunately,they are extremely rare.The most famous ones happened at Texas City(1947),Flixborough(1974),Seveso (1976),Pemex(1984)and Bhopal(1984).Some of these are always in the minds of the people even though the loss of life was small.No one died at Seveso,and only 28 workers at Flixborough.The worst accident of all was Bhopal,where up to 3,000 were killed.The Texas City explosion of fertilizer killed 552.The Pemex fire at a storage plant for natural gas in the suburbs of Mexico City took 542 lives,just a month before the unfortunate event at Bhopal.Some experts have discussed these accidents and used each accident to illustrate a particular danger. Thus the Texas City explosion was caused by tons of ammonium nitrate（硝酸铵）,which is safe unless stored in great quantity.The Flixborough fireball was the fault of management,which took risks to keep production going during essential repairs.The Seveso accident shows what happens if the local authorities lack knowledge of the danger on their doorstep.When the poisonous gas drifted over the town,local leaders were incapable of taking effective action.The Pemex fire was made worse by an overloaded site in an overcrowded suburb.The fire set off a chain reaction of exploding storage tanks.Yet,by a miracle,the two largest tanks did not explode.Had these caught fire,then 3,000 strong rescue team and fire fighters would all have died.From the passage we know that ammonium nitrate is a kind of________.A:natural gas,which can easily catch fireB:fertilizer,which can't be stored in a great quantityC:poisonous substance,which can't be used in overcrowded areasD:fuel,which is stored in large tanks
There is a smell of gas in the hold. You must wear your （）(氧气面罩).A、fire maskB、breathing apparatusC、life-jacketD、fire drill
单选题Which kind of vessel is not required to comply with the ISM code until 2002?（）APassenger ships and high-speed crafts of 500 gross tons or moreBOil tankers and Chemical tankers and Gas carriersCBulk freight vesselsDGeneral cargo vessels
单选题What kind of （）can be used for gas and chemical fires?AequipmentBapparatusCextinguishersDmachines
单选题Which of the following is the CORRECT explanation of “enzyme” (Para. 6)?AA kind of chemical hormone that is produced by human body.BA kind of protein that act as catalyst in diagnosing lactose.CA kind of fungus that can be used to decompose lactose.DA kind of gene that is called lactase.
单选题If the ship is alongside the wharf，what kind of（）is used?Apilot ladderBrope ladderCrod ladderDaccommodation ladder
单选题What is an advantage of using foam in fire fighting?（）AIt is MOST effective on very hot oil fires where the temperatures of the liquid exceed 100°C (212°F)BMost foams can be used with dry chemicals to attack a fire by two methodsCFoam is effective on combustible metal firesDFoam can be made with seawater or fresh water
单选题What can we learn from the passage?ASolar energy itself is expensive.BSolar power will be used up very soon.CSolar power is a kind of clean and useful energy.DSolar power is much better than the other energies.
单选题Which fire extinguishing agent can NOT be used on an ethylenediamine?（）AWater foamBDry chemical powderCWater fogDAlcohol foam
单选题Fires in escaping flammable gas are quickly brought under control by（）Astopping the flow of gasBreducing the chemical chain reactionCincreasing the oxygen supplyDcooling below the autoignition point
单选题What is the relationship between “lactase” and “lactose” according to the passage?ALactase is indispensable to decomposing lactose.BThey both can act as a kind of enzyme.CLactase is the physical form of lactose.DLactase can be used to synthesize lactose.
单选题What can be used to measure the percentage of oxygen inside a chain locker?（）AFlame safety lampBCombustible gas indicatorCOxygen indicatorDH2S meter
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
单选题Diesel engine exhaust gas temperatures can be used to determine individual cylinder （）.AperformanceBhorsepower outputCfuel consumptionDscavenge effect
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 the build up of gas concentrationsCdilute tank atmospheres to keep gas concentrations below the lower explosive limitDprevent fires in the pumproom by continually displacing flammable vapors
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
单选题What is used to test a tank for oxygen content?（）ACombustible gas indicatorBVapor indicatorCAtmosphere analyzer kitDNone of the above