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单选题
If not attached to the nozzle,each low-velocity spray applicator on a vessel must be stowed（）.
A
in a protected area on the main deck
B
inside a machinery space near the entrance
C
next to the fire hydrant to which the fire hose is attached
D
on a rack inside the quarters near the entrance
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If not attached to the nozzle, each low-velocity spray applicator on a vessel must be stowed__________.A.in a protected area on the main deckB.inside a machinery space near the entranceC.next to the fire hydrant to which the fire hose is attachedD.on a rack inside the quarters near the entrance
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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
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can fit any size hoseB
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单选题The all-purpose nozzle will produce a fog spray when you（）.A
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单选题High-velocity fog（）.A
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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
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单选题The spray of water in low-velocity fog will have（）.A
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单选题A fire hose with a nozzle attached must be connected to each hydrant except when exposed to heavy weather or when the（）.A
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单选题Which of the following problems may occur if the opening pressure of a fuel injection nozzle is greater than specified by the engine manufacturer?（）A
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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
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单选题Faulty operation of diesel engine fuel injection nozzles can be a direct cause of（）.A
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sediment in the fuel supplyC
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单选题Faulty operation of diesel engine fuel injection nozzles can be directly caused by （）.A
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excessive fuel nozzle holder coolingC
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考题
单选题A Kort nozzle is a(n)（）.A
hollow tube surrounding the propeller used to improve thrustB
nozzle attached to a firefighting hoseC
intake valve on a diesel engineD
piston cylinder on a diesel engine
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单选题A fire main system must have enough fire hydrants so that each accessible space may be sprayed with（）.A
a low velocity spray applicatorB
a water spray or solid streamC
at least two spray patterns of waterD
at least 25 psi delivered pressure
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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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