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单选题
Water fog from an all-purpose nozzle may be used to（）.
A
fight an electrical fire
B
fight a magnesium fire
C
eliminate smoke from a compartment
D
All of the above
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The cooling liquid used for the cylinder may be referred to as _____.A.jacket waterB.make-up waterC.boiler waterD.flushing water
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One advantage of the all-purpose nozzle is that it ______.A.can fit any size hoseB.converts a stream of water into a fogC.increases the amount of water reaching the fireD.can spray two streams of water at the same time
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Which two statements are true about the use of the procedures listed in the vsysaux_occupants.move_procedure column?()
A. The procedure may be used for some components to relocate component data to the SYSAUX tablespace from its current tablespace.B. The procedure may be used for some components to relocate component data from the SYSAUX tablespace to another tablespace.C. All the components may be moved into SYSAUX tablespace.D. All the components may be moved from the SYSAUX tablespace.
考题
The difference in water spray pattern between the high-velocity tip and low-velocity applicator used with the all-purpose nozzle is due to ______.A.a difference in water pressureB.the method of breaking up the water streamC.the length of the applicatorD.All of the above
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If a firefighting situation calls for low-velocity fog you would ______．A.order the engine room to reduce pressure on the fire pumpB.put the lever on an all-purpose fire nozzle all the way forwardC.attach a low-velocity fog applicator with the nozzle shut downD.put the lever on an all-purpose fire nozzle all the way back
考题
The high-velocity fog tip used with the all-purpose fire fighting nozzle should always be ______．A.Attached by a chainB.Coated with heavy grease to prevent corrosionC.Painted red for identity as emergency equipmentD.Stored in the clip at each fire station
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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If a firefighting situation calls for low-velocity fog you would（）.A
order the engine room to reduce pressure on the fire pumpB
put the lever on an all-purpose fire nozzle all the way forwardC
attach a low-velocity fog applicator with the nozzle shut downD
put the lever on an all-purpose fire nozzle all the way back
考题
单选题On the all-purpose nozzle，the position of the valve when the handle is all the way forward is（）.A
shutB
fogC
solid streamD
spray
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On a bulk chemical carrier，water should NOT be used as an extinguishing agent to fight a fire if the water may come into contact with the chemical called（）.A
acrylic acidB
benzeneC
oleumD
vinyl toluene
考题
单选题One advantage of the all-purpose nozzle is that it（）.A
can fit any size hoseB
converts a stream of water into a fogC
increases the amount of water reaching the fireD
can spray two streams of water at the same time
考题
单选题The straight stream capability of an all-purpose nozzle is used in fighting a class A fire to（）.A
shield fire fighters from radiant heatB
break up burning materialC
get the most water possible on the fireD
drive heat and smoke ahead of the fire fighters
考题
单选题The all-purpose nozzle will produce a fog spray when you（）.A
pull the nozzle handle all the way back toward the operatorB
pull the nozzle handle back to a position where the handle is perpendicular to the plane of the nozzleC
push the nozzle handle forward as far as it will goD
insert a fog applicator between the fire hose and nozzle
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单选题The（）enables water to be blow down or emptied from the boilerIt may be used when partially or completely emptying the boiler.A
main stem stop valveB
auxiliary steam stop valveC
feed check or control valveD
blow down valve
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单选题As the air passes through the charge air cooler, its temperature may be reduced and moisture condensed, with the condensate in danger of being carried into the engineSo a water separator should be mounted beneath the bottom part of the engine inlet manifoldA water separator is used in order to （）.A
keep the air from being carried into the engineB
keep the moisture from being condensedC
keep the danger from being carded into the engineD
take away the condensate from the air
考题
单选题The cooling liquid used for the cylinder may be referred to as （）.A
jacket waterB
make-up waterC
boiler waterD
flushing water
考题
单选题Expansion tank should be used to remove （） from cooling water.A
scaleB
sludgeC
chemicalsD
air
考题
单选题The difference in water spray pattern between the high-velocity tip and low-velocity applicator used with the all-purpose nozzle is due to（）.A
a difference in water pressureB
the method of breaking up the water streamC
the length of the applicatorD
All of the above
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A combination or all-purpose nozzle produces（）.A
low-velocity fog onlyB
a solid stream onlyC
a solid stream and foamD
a solid stream and fog
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Distortion of the spray pattern of a nozzle or injector may be indicated by a/an（）A
high firing pressureB
overload of that particular cylinderC
smoky exhaustD
cooling water temperature rise
考题
单选题When using a high-velocity fog stream in a passageway，the possibility of a blow back must be guarded against. Blow back is most likely to occur when（）.A
pressure builds up in the nozzle which causes a surge of waterB
the only opening in a passageway is the one from which the nozzle is being advancedC
pressure in the fire hose drops below 100 psiD
a bulkhead collapses due to heat and pressure
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The 12-foot low-velocity fog applicator（）.A
has a spray pattern 12 feet in diameterB
can be used in conjunction with both 1-1/2 inch and 2-1/2 inch all-purpose nozzlesC
has a 90°bend at its discharge endD
has a screw thread end which connects to the all-purpose nozzle
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