更多"Fog is likely to occur when there i"的相关试题:
[单项选择]Steam smoke will occur when（）.
A. extremely cold air from shore passes over warmer water
B. warm dry air from shore passes over cooler water
C. cold ocean water evaporates into warm air
D. cool rain passes through a warm air mass
[单项选择]Neap tides occur when the（）.
A. Moon is in its first quarter and third quarter phases
B. Sun and Moon are on opposite sides of the Earth
C. Moon's declination is maximum and opposite to that of the Sun
D. Sun and Moon are in conjunction
[单项选择]Which will most likely occur when entering shallow water? （）
A. Rudder action will become more effective
B. The vessel's list will change
C. The vessel's trim will change
D. An increase in speed will occur
[单项选择]Emulsification of oil will occur when mixed with （）.
A. air
B. black oil
C. water
D. ice cream
[单项选择]Which of the following problems may occur when using fuel oil with a high sulphur content?（）
A. Injection lag
B. Lube oil dilution
C. Pre-ignition
D. Corrosion
[单项选择]What is likely to occur when you are surging synthetic mooring lines on the gypsyhead during mooring operations?（）
A. The lines may jam and then jump off the gypsyhead
B. If there is sudden strain on the line，the man tending the line may be pulled into the gypsyhead
C. The lines' surging may cause the vessel to surge
D. The heat generated may cause the lines to temporarily fuse to the gypsyhead
[单项选择]Steam fog is most likely to occur on the Mississippi and Ohio Rivers in（）.
A. spring，around late evening
B. spring，around early evening
C. fall，around early morning
D. fall，around midday
[单项选择]What is TRUE when operating in fog and other vessels are detected by radar?（）.
A. You should make an ample change to port for a vessel crossing on the starboard bow
B. You should maneuver in ample time if a close-quarters situation is developing
C. You should determine the course and speed of all radar contacts at six minute intervals
D. Long-range scanning will provide early warning of ALL other vessels within the radar's range
[单项选择]Fog forms when the air（）.
A. Is 50% water saturated
B. Is 90% water saturated
C. Temperature is greater than the dew point temperature
D. Temperature is equal to，or below the dew point temperature
[单项选择]When navigating in thick fog with the radar on，you should（）.
A. station the look-out in the wheelhouse to keep a continuous watch on the radar
B. secure the sounding of fog signals until a vessel closes within five miles
C. station a look-out as low down and far forward as possible
D. keep the radar on the shortest available range for early detection of approaching vessels
[单项选择]When your vessel enters thick fog，she should sound（）every two minutes in accordance with these Rules.
A. one short blast
B. one prolonged blast
C. two short blasts
D. three short blasts
[单项选择]When vessel enters thick fog, she should sound（）every two minutes in accordance with the rules.
A. one short blast
B. one prolonged blast
C. two short blasts
[单项选择]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 water
B. the only opening in a passageway is the one from which the nozzle is being advanced
C. pressure in the fire hose drops below 100 psi
D. a bulkhead collapses due to heat and pressure
[单项选择]When riveted joints occur at the ends of plating they are called（）.
A. trailers
B. terminals
C. seams
D. butts
[单项选择]Which kind of fog is also named as ground fog?（）
A. Advection
B. Radiation fog
C. frontal fog
D. Steam fog
