更多"（）should be used during the poor vi"的相关试题:
[单项选择]The term restricted visibility，when used in the Rules，refers to（）.
A. situations when you can see vessels on radar that you cannot see visually
B. visibility of less than half a mile
C. any condition where visibility is restricted
D. visibility where you cannot see shore
[单项选择]Which portable fire extinguisher should be used on a class C fire on board a vessel?（）
A. Carbon dioxide
B. Water (stored pressure)
C. Foam
D. Carbon tetrachloride
[单项选择]The type of extinguisher which should be used for an electricity fire is（）.
A. foam or soda acid
B. dry chemical or foam
C. carbon dioxide or dry chemical
D. carbon dioxide or foam
[单项选择]A tourniquet should be used to control bleeding ONLY（）.
A. with puncture wounds
B. when all other means have failed
C. when the victim is unconscious
D. to prevent bleeding from minor wounds
[单项选择]Soot blowers should be used in proper sequence so that（）
A. excess stresses will not be set up in the boiler
B. the decks will not be covered with soot
C. the soot will be swept toward the uptakes
D. there will not be a loss of steam pressure
[单项选择]An ammeter should be used to measure （）
A. the voltage between two points in a circuit
B. circuit continuity
C. current flow in a circuit
D. total or partial circuit resistance
[单项选择]Which channel and mode should be used when initiating a distress alert transmission（）.
A. Channel 6 DSC
B. Channel 6 Radiotelephony
C. Channel 13 Radiotelephony and channel 16 DSC
D. Channel 70 DSC
[单项选择]Which method should be used to secure a manila line to bitts（）.
A. A round turn on the bitt farthest from the strain and then figure eights
B. A round turn on the bitt closest to the strain and then figure eights
C. Figure eights and then a round turn at the top of both bitts
D. Only figure eights are necessary on both bitts
[单项选择]Which of the valves listed should be used either in the fully opened or the fully closed position?（）
A. A gate valve
B. A globe valve
C. Any check valve
D. Any needle valve
[单项选择]What should be used to steer an open lifeboat if the rudder becomes lost or damaged?（）
A. Sea anchor
B. Steering oar
C. Spare rudder
D. Daggerboard
[单项选择]Which method should be used to warm up the pump turbines prior to discharge（）.
A. Lock the turbine rotor and slowly bleed in steam until operating temperature is reached
B. Run the pump at high speed with the discharge valves closed
C. Run the turbine at slow speed with the pump disconnected
D. Shut the discharge valve and run the pump at slow speed
[单项选择]In bad weather，what length of chain should be used with a single anchor? （）
A. 3 times the depth of water
B. 6 times the depth of water
C. 10 times the depth of water
D. 15 times the depth of water
[单项选择]Head tank should be used to remove （） from cooling water.
A. scale
B. sludge
C. chemicals
D. air
[单项选择]Expansion tank should be used to remove （） from cooling water.
A. scale
B. sludge
C. chemicals
D. air
