The most frequent cause of fires aboard tankers is due to ______．A.Improper gas freeingB.Leaking of cargo pump glandsC.Tobacco smokingD.Spontaneous combustion
The most frequent cause of fires aboard tankers is due to ______．
A.Improper gas freeing
B.Leaking of cargo pump glands
C.Tobacco smoking
D.Spontaneous combustion
相关考题：
听力原文：Other aspects of operational risk include major failure of information technology systems or events such as major fires or other disasters.(6)A．Information technology system can cause operational risk.B．A major fire can be a cause of operational risk.C．The most important types of operational risk involve breakdowns in internal controls and corporate governance.D．Other aspects of operational risk include firing its dealers, lending officers or other staff exceeding their authority or conducting business in an unethical or risky manner.
The effect that exhaust gas recirculation can reduce NOX formation is partly due to a reduction of the()concentration in the combustion zone and partly due to the content of water and carbon dioxide in the exhaust gas.A.OxygenB.NitrogenC.SulphurD.Freon
The major cause of fuel pump and injection system problems is _____.A.improper adjustmentsB.contaminated fuelC.kinked fuel linesD.excessive engine vibration
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
High concentrations of H2S gas are most dangerous to personnel because they can ______.A.cause involuntary muscle contractionsB.paralyze your breathing systemC.cause eye inflammationD.cause dizziness
Certificate of Fitness for the Carriage of Liquefied Gases in Bulk shall be carried on board by ______．A.gas carriers constructed on or after 1 July 1986B.gas carriers constructed before 1 July 1986C.All chemical tankersD.oil tankers of 150 gross tonnage and above
The blowers of an inert gas generation system aboard a tanker，will be automatically secured if ______．A.Normal water supply at the water seal is lostB.The temperature of the inert gas being delivered to the cargo tanks is more than 150℉C.The cooling water supply to the scrubbers is lostD.All of the above
Which statement about inert gas pressures in a cargo tank is TRUE ________．A.The pressures of the inert gas in the tank may create excessive pressure at the pump while dischargingB.Gas pressures should be maintained at the highest permissible level throughout the discharging processC.High gas pressures may cause pyrophoric oxidation in the tankD.High gas pressures may cause loss of suction when stripping
Which statement is TRUE concerning inert gas systems on tankers ________．A.Flue gases from the ship's boilers are used in some systemsB.The gas is heliumC.Using the system accelerates the rusting of the tanksD.All of the above
What kind of （）can be used for gas and chemical fires?A、equipmentB、apparatusC、extinguishersD、machines
The most prevalent cause of computer center fires is which of the following?计算机中心火灾主要的原因是以下哪一项？（）A、AC equipment 交流电源设备B、Heating systems 供热系统
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Fire extinguishers on inspected vessels are numbered by size I through V，with I being（）.Aused for electrical fires onlyBthe smallestCthe most accessibleDthe most effective
单选题The purpose of inert gas systems aboard tankers is to（）.Aallow sufficient oxygen in the tank to sustain lifeBprevent outside air from entering the tankCprovide more discharge pressureDcomply with pollution regulations
单选题When fruit is carried as refrigerated cargo，the most frequent cause of its being infected at the discharge port is（）.Aleaks in the ship's refrigeration systemBimproper cleaning of the cargo spacesCcarriage at the wrong temperatureDimproper precooling of the cargo spaces
单选题Ullages on tankers are measured from（）.Aan above-deck datum such as the top of the ullage pipeBthe tank ceiling aboard transversely framed vesselsCthe tank topDa thievage mark below the edge of the deck
单选题Fins are installed on the generating tube surfaces in waste heat boilers to （）.Aprevent soot fires in the exhaust systemBprevent exhaust gas erosion of the tubesCincrease the velocity of exhaust gas flowDincrease the rate of heat transfer
单选题Fire extinguishers used on ship’s are numbered by size I through V，with I being（）.Aused for electrical fires onlyBthe smallestCthe most accessibleDthe most effective
单选题The author most probably agrees that artificial sweetened gum _____Ais not effective in reducing stress.Bmay cause some health problems.Cshould be avoided although it is healthful.Dis harmful for one’s health due to its sugar containing.
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Which type of ships as below isn’t subject to Enhanced Survey Program (ESP)?（）ANon-sea-going shipsBLiquefied gas carriersCBulk carriers, including ore carriersDEdible oil tankers
单选题Due to the hazards involved with Halon extinguishers on a ship，the size II extinguisher may only be used（）.AoutsideBon class C firesCin an emergencyDon class B fires
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The blowers of an inert gas generation system aboard a tanker，will be automatically secured if（）.Anormal water supply at the water seal is lostBthe temperature of the inert gas being delivered to the cargo tanks is more than 150°FCthe cooling water supply to the scrubbers is lostDall of the above
单选题The most prevalent cause of computer center fires is which of the following?计算机中心火灾主要的原因是以下哪一项？（）AAC equipment 交流电源设备BHeating systems 供热系统