燃料处理设备（fuel treatment equipment）
燃料处理设备（fuel treatment equipment）
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第三组：The sewage treatment system must be capable of discharging an effluent that comes within the limits of the tests. Sewage can be treated biologically so that it may be discharged with minimal damage to ecosystem. Biological treatment involves the use of living organisms to treat the sewage within the sewage treatment plant so the liquids and sludge discharged are within the standards specified.Biological treatment plants are usually built up as a module and consist of various sections.Waste matter collected from the ships sanitary appliances is led through a sanitary piping system to the treatment module. The solid matter is broken up by passing it through a screen or a series of revolving cutters. The broken up solid material, together with the waste liquid, passes into a tank containing bacteria which require oxygen and a nutrient to propagate. The nutrient is contained in the solid waste material, and oxygen is supplied by bubbling compressed air through the broken up waste. The propagated bacteria change the waste material into a sludge by aerobic digestion. The sludge is finally treated to kill the coliform. bacteria before it is passed overboard.When a biological sewage plant is started up, such as when activating a new ship or after cleaning out the tank, a pellet containing bacteria is introduced into the tank. It takes approximately one week for the bacteria to propagate and make the system fully effective. The choice of sanitary appliance cleaners requires extreme care, as many cleaners are toxic to the active bacteria. Once a biological sewage plant is made active it should not be shut down. If it is it will have to be reactivated again because the bacteria will die without a supply of nutrients and oxygen.Bacteria that require oxygen for their survival are referred to as aerobic. Aerobic bacteria are normally used in ships sewage treatment equipment. Other forms of bacteria that do not require oxygen are referred to as anaerobic. Anaerobic bacteria are used in shore based sewage treatment works where methane is obtained as a by-product for use as fuel.This passage is mainly aboutA.sewage treatment methodsB.the various sections of a sewage treatment plantsC.biological sewage treatment systemD.how the sewage treatment plants are started up
OEE英文全称是什么？（）A、Overall Equipment Efficiency全局设备效率B、Opto-Electronic Element光电元器件C、Overall Equipment Environment全局设备环境D、Operating Equipment Effectivity设备可操作性
告警可选列表中可以显示出以下（）告警类型。A、Communications（通信）B、Equipment（设备）C、Processing Error（处理错误）D、Quality of Service（服务质量）
The control of communications test equipment should be clearly addressed by security policy for which of the following reasons?通信测试设备的控制应该通过安全策略明确的原因是什么？（）A、Teste quipment can be used to browse information passing on anetwork.测试设备可以用于浏览在网络上传递的信息B、Test equipment is difficult to replace if lost or stolen.测试设备如果丢失或被盗很难替换C、Test equipment is easily damaged.测试设备很容易被损坏D、Test equipment must always be available for the maintenance personnel.测试设备对于维修人员必须是永远可用的
单选题Fuel injection equipment must be kept in good condition, timed correctly, and the （）in each cylinder must also be carefully balanced so that individual cylinders are not overloaded.AMIPBMCRCMEPDBHP
单选题The burning of fuel oil in a diesel engine having a high sodium content, will cause （）Acorrosion and grooving of exhaust valvesBcorrosion and gumming of the fuel injection pumpCsalt deposits in the exhaust manifoldDslag deposits in the fuel injection equipment
单选题The treatment of the fuel oils involves storage, heating, filtering and（）AcentrifugingBpressurizingCatomizationDigniting
单选题Which of the following equipment is not pollution prevention equipment?（）Aoily water separatorBsewage treatment plantCfuel oil separatorDincinerator
单选题The major cause of problems occurring with fuel injection equipment is（）Aincorrect replacement of barrels and plungers of jerk pumpsBoverheating of the nozzle orificesCcracked pump housingsDdirt in the fuel
单选题The MOST important element in administering CPR is（）.Ahaving the proper equipment for the processBstarting the treatment quicklyCadministering of oxygenDtreating for traumatic shock
单选题When occurring a fire in the scavenge air box, the following measures should be taken except for（）Areducing speed to SLOW and asking bridge for permission to stopBstopping the fuel oil supplyCswitching-on the auxiliary blowersDputting the scavenge air box fire extinguishing equipment into function
单选题（） fuel oils （） lubricating oils require treatment before passing to the engine.ABoth；andBNeither；norCEither；orDBoth；or