单选题Distilled water from an evaporator may be discharged into a potable water tank （）.Athrough a detachable hose connectionBafter passing through an activated charcoal filterCafter chemical analysis shows it is fit for consumptionDthrough a solenoid operated three-way valve
单选题
Distilled water from an evaporator may be discharged into a potable water tank （）.
A
through a detachable hose connection
B
after passing through an activated charcoal filter
C
after chemical analysis shows it is fit for consumption
D
through a solenoid operated three-way valve
参考解析
解析：
暂无解析
相关考题：
Brandy is a strong alcoholic spirit distilled from wine. Manufactured in many countries, brandy is most notable in the form. of cognac, made from white grapes in the Charente district of France. Most fine brandies are distilled in pot stills, blended and flavored, and stored in casks (preferably oak) to mellow. Brandies are also made from fruits other than the grape, such as plum or peach.Brandy is a soft drink spirit distilled from wine()此题为判断题(对，错)。
When the water produced from most evaporator is supplied for drinking purpose, it must be treated to ensure it is biologically pure and _____.A.slightly acidicB.slightly alkalineC.no saltyD.slightly bitter
What is the BEST conductor of electricity?A.Carbon dioxideB.Distilled waterC.Fresh waterD.Salt water
The number and position of hydrants arranged on board shall be such that _______，one of which shall be from a single length of hose，may reach any part of the ship normally accessible to the passengers or crew while the ship is being navigated．A.at least two jets of water which shall be from the same length of hoseB.at least two jets of water emanating from the same hydrantC.at least two jets of water not emanating from the same hydrantD.at least two jets of water not emanating from the same hydrant，one of which shall be from a single length of hose
单选题Excessive scale formation in a distilling plant may result from （）.Apoor distillate qualityBreduced evaporator capacityClow brine concentrationDimproper vacuum regulation
单选题The vacuum maintained in the salt water feed heater shell of a flash-type evaporator is generally accomplished by （）.Aa separate air ejector unitBa direct unimpeded connection between second stage and salt water feed heaterCeither by vacuum drag or an external line from the first stage via a fixed orificeDthe fixed orifice provided in the steam supply line
单选题An increasing head pressure in a refrigeration system, without any corresponding change in the cooling water inlet temperature, would probably be caused by （）.Arestriction in refrigerant pipingBair and non-condensable gases in the condenserCwater in the refrigerantDflooding back of liquid refrigerant from the evaporator
单选题When distilling sea water the cooling water discharging from the distiller is fed back to evaporator as feed water （）.Ato decrease scale formationBfor better cooling effectCfor more economical purposeDto raise vacuum
单选题Which statement concerning the collection of fresh water is FALSE?（）AFresh water may be obtained from fishBlifeboat covers or canopies should be washed with rain before drinking water is collectedCFresh water may be collected from condensation inside the life-raftDFreshwater cannot be produced from standing seawater
单选题Water fog from an all-purpose nozzle may be used to（）.Afight an electrical fireBfight a magnesium fireCeliminate smoke from a compartmentDAll of the above
单选题Upon arrival at a port, a vessel is not allowed （） her ballast water, tanker washings or bilge water and other oily water at will.Ato dischargeBto be dischargedCdischargingDbeing discharged
单选题A new ocean going ship of 2000 gross tons having an inoperative oily water separator may dispose of its bilge slops by （）.Aholding its slops onboard until they can be pumped into the city sewer systemBcirculating them through the lube oil purifier to remove water and debrisCholding its slops onboard until they can be discharged to a shore side reception facilityDpumping them into a settling tank for separation before pumping the oily water residue overboard
单选题The electrolyte in a lead-acid storage battery consists of distilled water and （）.Ahydrogen chlorideBcalcium chlorideCsulfuric acidDmuriatic acid
单选题（） system is arranged to ensure that water can be drawn from any tank or the sea and discharged to any other tank or the sea as required to trim the vessel.AThe domestic waterBBilge waterCOil transferDThe ballast
单选题Distilled water from an evaporator may be discharged into a potable water tank （）.Athrough a detachable hose connectionBafter passing through an activated charcoal filterCafter chemical analysis shows it is fit for consumptionDthrough a solenoid operated three-way valve
单选题When the water produced from most evaporator is supplied for drinking purpose, it must be treated to ensure it is biologically pure and （）.Aslightly acidicBslightly alkalineCno saltyDslightly bitter
单选题When distilling salt water the cooling water discharging from the distiller is fed back to evaporator as feed water （）.Ato cut down the amount of cooling water neededBto prevent an excess amount of cooling water from being discharged to the bilgesCto supply hot water to the evaporator for more economical operationDNone of the above is tree
单选题Why will a two stage flash type distilling plant tend to operate more efficiently when operating in cold seawater?（）AThe colder seawater passing through the condenser tube bundles of the various stages increases evaporator vacuumBThe amount of heated feed water discharged from the feed water heater after cndenser is increasedCFewer non-condensable gases are created by the flow of colder seawaterDMore seawater is allowed to pass through the flint stage overflow weir
单选题Distilled water is now largely used on board, this may be corrosive (due to presence of dissolves CO2) and （） to the taste.AflatBslatCsweetDacid
单选题The reciprocating pump can’t draw water from a tank may be caused by （）.Aleaky pipeBopened inlet valveCtoo much water in tankDNone of the above
单选题Aburned exhaust valve may be detected by a higher than normal （）Afiring pressureBexhaust temperature from a particular cylinderCcooling water temperatureDcompression pressure
单选题With a vacuum boiling evaporator, the remainder of sea water fed to the evaporator is pumped out by （）.Aa brine pumpBan air ejectorCa feed pumpDdistillate pump
单选题You may find the time of slack water after low water in a certain port from（）.ADeadweight ScaleBTide TablesCNotices to MarinersDTable of Azimuth
单选题While troubleshooting a refrigeration system for low head pressure, liquid refrigerant flooding back from the evaporator is determined to be the causeIt may be necessary to （）.Achange the expansion valve adjustmentBreadjust the water regulating valve to increase the flow of waterCpurge air from the condenserDclean the waterside of the condenser
单选题（） neutralizes the acid conditions and（） cleanses the rings and grooves.AThe detergency；the alkalinityBThe alkalinity；the detergencyCThe inhabitant；the waterDThe additives；the distilled water
单选题If you change from a low pour point lubricant to a high pour point lubricant in a refrigeration system, （）.Acompressor lubrication will be improvedBoil will not leave the crankcaseCcompressor valves will be damagedDoil may congeal in the evaporator
单选题Which statement concerning the collection of fresh water is FALSE?（）AFresh water may be obtained from fishBLifeboat covers or canopies should be washed with rain before drinking water is collectedCFresh water may be collected from condensation inside the liferaftDSeawater should never be consumed
单选题When oil is accidentally discharged into the water，what should you do after reporting the discharge（）.AContain the oil and remove as much of it as possible from the waterBThrow chemical agents on the water to disperse the oilCThrow sand on the water to sink the oilDObtain your permit from the Corps of Engineers