Heating Chamber temperature low加热室温度低
Heating Chamber temperature low加热室温度低
相关考题：
Which of the processes listed would be the most satisfactory method to use to lower the humidity of the air being circulated by an air conditioning system?A.Cooling the air to a temperature just above dew pointB.Heating the air to a point at which moisture will boil off ,then re-cooling itC.Cooling the air to a point below dew point, then reheating itD.Heating the air and then cooling it to a point below dew point
( )is monitored on the drain tank and header tank by magnetic switches with a 20seconds delay to prevent false alarms due to surging A.Low pressure of the lubricating oilB.Low level of the lubricating oilC.High temperature of the lubricating oilD.High temperature of the cooling water
If the exhaust gas temperature of the incinerator is too high, or if sparks are developed, What should you do? A.Close the inlet and outletvalves for diesel oilB.Open the air nozzles in the secondary combustion chamber until it stopsC.Open the air nozzles in the primary combustion chamber until it stopsD.Close inlet valve for pressurized air
High firing pressures and low exhaust temperature in a diesel engine may resultfrom( ).A.decreased piston to cylinder head clearanceB.increased exhaust system back pressureC.early fuel injection timingD.low scavenge air temperature
The desirable properties of a marine fuel oil should include .A.high flash point and high viscosityB.low flash point and high viscosityC.low heating value and high sulphur contentD.high heating value and low sulphur content
单选题Around the combustion chamber, all the main components are to give low thermal strains and the smallest, circumferentially symmetric deformations for good sealing between piston rings and liner（）Adrill cooledBhole cooledCtube cooledDbore cooled
单选题The desirable properties of a marine fuel oil should include（）Ahigh flash point and high viscosityBlow flash point and high viscosityClow heating value and high sulphur contentDhigh heating value and low sulphur content
单选题In modern installations, the main engine and the standby auxiliary engines（）Acan be started at low temperature and are free from preheatingBusually are preheated by steam before being startedCare kept at a constant temperature and free from preheatingDare kept at a low temperature to save energy
单选题One of the purposes for water cooling the exhaust manifold in marine diesel engine is to （）Areduce lube oil temperatureBraise exhaust temperature reduceCexcessive heating of engine roomDreduce load on cooling water pump
单选题Early injection timing is indicated by （）.Ahigh exhaust temperature and low firing pressureBhigh exhaust temperature and high firing pressureClow exhaust temperature and low firing pressureDlow exhaust temperature and high firing pressure
单选题The heated feed-water entering any flash chamber of a flash-type evaporator will（）Avaporize, with the un-flashed water remaining at the temperature at which it entered the flash chamberBvaporize, with the un-flashed eater equalizing to the saturation conditions existing in the f lash chamberCvaporize, with the remaining water a t a temperature greater than it entered the flash chamberDboil, allowing steam bubbles to rise through the brine at the bottom of the flash chamber
单选题In the combustion chamber, the part whose surface is exposed to the highest temperature is the （）.Acylinder linerBcylinder coverCpistonDexhaust valve
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 （）Aavoid false alarms as a result of condensing water vaporBavoid danger of frost under very cold weatherCreduce the viscosity of the crankcase atmosphere in order to improve the fluidityDkeep the temperature of the oil mist detectors in an appropriate range
单选题If the temperature drops low enough, oil will not flow, （） just tell us the temperature.AHash pointBViscosityCPour pointDCetane number
单选题If found oil when we open low oil level plug of separator, it indicates （）Athe separator is overloadBthe monitor equipment of separator failsCthe discharge pump of separator can not workDthe temperature of oil water is low
单选题Low cylinder compression pressure and a high exhaust temperature may indicate （）Aearly fuel injection timingBleaking valvesCa continuously open scavenge air portDlow cooling water temperature
单选题Leaky exhaust valve will result in which of the following?（） (1) high exhaust temperature; (2) low compression pressure; (3) low firing pressure.A(1) and (2)B(1) onlyC(2) onlyD(1),(2) and (3)
单选题High firing pressures and a low exhaust temperature in a diesel engine may result from （）.Adecreased piston to cylinder head clearanceBincreased exhaust system back pressureCearly fuel injection timingDlow scavenge air temperature
单选题The heated feedwater entering any flash chamber of a flash-type evaporator will（）Avaporize, with the unflashed water remaining at the temperature at which it entered the flash chamberBvaporize, with the unflashed water equalizing to the saturation conditions existing in the flash chamberCvaporize, with the remaining water at the temperature greater than it entered the flash chamberDboil, allowing steam bubbles to rise through the brine at the bottom of the flash chamber
单选题The greater the pressure difference between a high and a low pressure center，the（）.Adryer the air mass will beBcooler the temperature will beCgreater the force of the wind will beDwarmer the temperature will be
单选题The refrigerant leaves the evaporator of a refrigeration system as a low pressure （）.Asub-cooled liquidBhigh temperature liquidCoil saturated liquidDsuperheated vapor
单选题Oily water separator mis-alarms, the most possible reason is （）Aseparating oil too fastBthe sensor flushed badlyCthe discharge solenoid value out of orderDtoo low heating temperature
单选题The refrigerating agent can （） at low temperature in the evaporator.AexpandBevaporateCcondenseDdistil
单选题Bad valves operation of the reciprocating air compressors can be detected by observation of （）.Athe discharge temperature lowBthe discharge temperature highCthe discharge pressure riseDthe inter-stage pressure low
单选题If the pump for a hydraulic anchor windlass is over heating, the cause may be （）.Aincreased pump speedBexcessive pump discharge pressureCtoo low of a tilting box angleDlow pump speed
单选题When running a large, low-speed, main propulsion diesel engine on heavy fuel, which of the following precautions should be observed when switching back over to diesel oil?（）AThe diesel oil must never be allowed to mix with the heavy fuelBThe temperature of the fuel from the pre–heater should be gradually reduced after switching over the three–way valveCThe heating steam to the pre-heater should be secured as soon as the diesel fuel passes through the three-way valveDThe heating steam must be secured before the diesel oil passes through the three-way valve
单选题Around the combustion chamber, all the main components are bore cooled to give low strains and the smallest, circumferentially symmetric deformations for good sealing between piston rings and liner（）AthermalBmechanicalCplasticDelastic