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单选题
The 12-foot low-velocity fog applicator（）.
A
has a spray pattern 12 feet in diameter
B
can be used in conjunction with both 1-1/2 inch and 2-1/2 inch all-purpose nozzles
C
has a 90°bend at its discharge end
D
has a screw thread end which connects to the all-purpose nozzle
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更多 “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” 相关考题
考题
Dense fog comes with bad visibility, fog signal bell must be kept ________at regulation intervalsA.to goB.goingC.goesD.go
考题
A mobile offshore drilling unit under tow is approaching a fog bank. When should fog signals be started?A.When the towing vessel enters the fogB.When the drilling rig enters the fogC.When the towing vessel can no longer be seen from the rigD.Immediately
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
考题
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
Firefighting foam is only effective when the foam _____.A.penetrates to the bottom of the fireB.is kept saturated with low-velocity water fogC.mixes with the burning fuel oilD.completely covers the top of the burning liquid
考题
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 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
考题
The personnel department requires that all ( )be interviewed at least three times before a hiring
decision is made.
A. applications
B. applicants
C. appliances
D. applicator
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A mobile offshore drilling unit under tow is approaching a fog bank. When should fog signals be started? （）A
When the towing vessel enters the fogB
When the drilling rig enters the fogC
When the towing vessel can no longer be seen from the rigD
Immediately
考题
单选题The ship should reduce speed in the thick fog because of（）.A
the poor visibilityB
the fog signalsC
the fast speedD
the good sight
考题
单选题What is the use of the books of Admiralty List of Lights and Fog Signals? Their use is to （）.A
Mention signal stations and ice，storm，traffic and port signalsB
Give the international numbers of lightsC
Give the correction of the lights and fog signalsD
Give the information on the lights and fog signals
考题
单选题The fog most commonly encountered at sea is called（）.A
conduction fogB
radiation fogC
frontal fogD
advection fog
考题
单选题Radiation fog is more commonly encountered in（）.A
springB
later winterC
autumnD
end of summer
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
考题
单选题High-velocity fog（）.A
is a finer，more diffuse water spray than low-velocity fogB
requires that the water pressure be no greater than 60 psiC
produces an effective fog pattern no more than 6 feet beyond the nozzleD
extinguishes a fire by absorbing heat and reducing the supply of oxygen
考题
单选题A tug is towing three manned barges in line in fog. The first vessel of the tow should sound （）.A
no fog signalB
one short blastC
one prolonged and three short blastsD
one prolonged，one short，and one prolonged blast
考题
单选题An instrument useful in predicting fog is the（）.A
sling psychrometerB
microbarographC
anemometerD
aneroid barometer
考题
单选题Which kind of fog is also named as ground fog?（）A
AdvectionB
Radiation fogC
frontal fogD
Steam fog
考题
单选题（）gives listings of all lighthouses，lightships，lit floating marks（over 8m in height），fog signals and lights of navigational significance.A
Ocean Passages for the WorldB
Admiralty List of Radio SignalsC
IALA Maritime Buoyage SystemD
Admiralty List of Lights and Fog Signals
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If a fire occurs in the boiler room as a result of a leaking fuel line, you should FIRST （）.A
notify the engineer on watchB
isolate and secure the pipingC
throw sand on the fireD
extinguish the fire using a combination nozzle with applicator
考题
单选题The spray of water in low-velocity fog will have（）.A
greater range than high-velocity fogB
lesser range than high-velocity fogC
about the same range as high-velocity fogD
greater range than a solid stream
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Firefighting foam is only effective when the foam（）.A
penetrates to the bottom of the fireB
is kept saturated with low-velocity water fogC
mixes with the burning fuel oilD
completely covers the top of the burning liquid
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