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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
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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)。
考题
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
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What is the BEST conductor of electricity?A.Carbon dioxideB.Distilled waterC.Fresh waterD.Salt water
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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
考题
单选题Excessive scale formation in a distilling plant may result from （）.A
poor distillate qualityB
reduced evaporator capacityC
low brine concentrationD
improper vacuum regulation
考题
单选题The vacuum maintained in the salt water feed heater shell of a flash-type evaporator is generally accomplished by （）.A
a separate air ejector unitB
a direct unimpeded connection between second stage and salt water feed heaterC
either by vacuum drag or an external line from the first stage via a fixed orificeD
the fixed orifice provided in the steam supply line
考题
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 （）.A
restriction in refrigerant pipingB
air and non-condensable gases in the condenserC
water in the refrigerantD
flooding back of liquid refrigerant from the evaporator
考题
单选题When distilling sea water the cooling water discharging from the distiller is fed back to evaporator as feed water （）.A
to decrease scale formationB
for better cooling effectC
for more economical purposeD
to raise vacuum
考题
单选题Which statement concerning the collection of fresh water is FALSE?（）A
Fresh water may be obtained from fishB
lifeboat covers or canopies should be washed with rain before drinking water is collectedC
Fresh water may be collected from condensation inside the life-raftD
Freshwater cannot be produced from standing seawater
考题
单选题Water fog from an all-purpose nozzle may be used to（）.A
fight an electrical fireB
fight a magnesium fireC
eliminate smoke from a compartmentD
All of the above
考题
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.A
to dischargeB
to be dischargedC
dischargingD
being discharged
考题
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 （）.A
holding its slops onboard until they can be pumped into the city sewer systemB
circulating them through the lube oil purifier to remove water and debrisC
holding its slops onboard until they can be discharged to a shore side reception facilityD
pumping them into a settling tank for separation before pumping the oily water residue overboard
考题
单选题The electrolyte in a lead-acid storage battery consists of distilled water and （）.A
hydrogen chlorideB
calcium chlorideC
sulfuric acidD
muriatic acid
考题
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.A
The domestic waterB
Bilge waterC
Oil transferD
The ballast
考题
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 （）.A
slightly acidicB
slightly alkalineC
no saltyD
slightly bitter
考题
单选题When distilling salt water the cooling water discharging from the distiller is fed back to evaporator as feed water （）.A
to cut down the amount of cooling water neededB
to prevent an excess amount of cooling water from being discharged to the bilgesC
to supply hot water to the evaporator for more economical operationD
None of the above is tree
考题
单选题Why will a two stage flash type distilling plant tend to operate more efficiently when operating in cold seawater?（）A
The colder seawater passing through the condenser tube bundles of the various stages increases evaporator vacuumB
The amount of heated feed water discharged from the feed water heater after cndenser is increasedC
Fewer non-condensable gases are created by the flow of colder seawaterD
More seawater is allowed to pass through the flint stage overflow weir
考题
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.A
flatB
slatC
sweetD
acid
考题
单选题The reciprocating pump can’t draw water from a tank may be caused by （）.A
leaky pipeB
opened inlet valveC
too much water in tankD
None of the above
考题
单选题Aburned exhaust valve may be detected by a higher than normal （）A
firing pressureB
exhaust temperature from a particular cylinderC
cooling water temperatureD
compression pressure
考题
单选题With a vacuum boiling evaporator, the remainder of sea water fed to the evaporator is pumped out by （）.A
a brine pumpB
an air ejectorC
a feed pumpD
distillate pump
考题
单选题You may find the time of slack water after low water in a certain port from（）.A
Deadweight ScaleB
Tide TablesC
Notices to MarinersD
Table of Azimuth
考题
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 （）.A
change the expansion valve adjustmentB
readjust the water regulating valve to increase the flow of waterC
purge air from the condenserD
clean the waterside of the condenser
考题
单选题（） neutralizes the acid conditions and（） cleanses the rings and grooves.A
The detergency；the alkalinityB
The alkalinity；the detergencyC
The inhabitant；the waterD
The additives；the distilled water
考题
单选题If you change from a low pour point lubricant to a high pour point lubricant in a refrigeration system, （）.A
compressor lubrication will be improvedB
oil will not leave the crankcaseC
compressor valves will be damagedD
oil may congeal in the evaporator
考题
单选题Which statement concerning the collection of fresh water is FALSE?（）A
Fresh water may be obtained from fishB
Lifeboat covers or canopies should be washed with rain before drinking water is collectedC
Fresh water may be collected from condensation inside the liferaftD
Seawater should never be consumed
考题
单选题When oil is accidentally discharged into the water，what should you do after reporting the discharge（）.A
Contain the oil and remove as much of it as possible from the waterB
Throw chemical agents on the water to disperse the oilC
Throw sand on the water to sink the oilD
Obtain your permit from the Corps of Engineers
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