更多"What is TRUE when operating in fog "的相关试题:
[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 minutes intervals
D. Long-range scanning will provide early warning of all other vessels within the radar’s range
[单项选择]Risk of collision exists when an approaching vessel has a(n)（）.
A. generally steady bearing and decreasing range
B. generally steady range and increasing bearing
C. increasing range and bearing
D. decreasing bearing only
[单项选择]What provides little or no indication that a vessel is dragging anchor? （）
A. Increasing radar range to a fixed object ahead
B. Drift lead with the line leading perpendicular to the centerline
C. Vibrations felt by placing a hand on the cable
D. Changing bearings to distant fixed objects abeam
[单项选择]Which vessel is the stand-on vessel when two vessels crossing in fog are NOT in sight of one another（）.
A. The vessel which has the other on her own starboard side
B. The vessel which has the other on her own port side
C. The one which hears the other's fog signal first
D. Neither vessel is the stand-on vessel
[单项选择]Which statement is TRUE when comparing cold and warm fronts?（）
A. Cold fronts are more violent and of shorter duration
B. Cold fronts are milder and last longer
C. They are very similar with the exception of wind direction
D. Warm fronts are more violent and of longer duration
[单项选择]What occurs when rising air cools the dew point?（）
A. advection fog forms
B. humidity decrease
C. wind increase
D. Cloud form
[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]Fog is likely to occur when there is little difference between the dew point and the（）.
A. relative humidity
B. air temperature
C. barometric pressure
D. absolute humidity
[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]What is TRUE concerning frapping lines?（）
A. They are used to steady a lifeboat when lowered
B. They are normally attached to the davit span
C. They are needed only on radial davits
D. They are used to clear the puddings
[单项选择]What is TRUE about hoisting operations?（）
A. Personnel may work beneath suspended loads，as long as they are alert and wear hard hats
B. If a suspended load with no tag begins to spin，personnel should attempt to stop the spinning if the load is within reach
C. If tag lines are used to control a suspended load，they should be secured to the deck
D. Personnel not involved in the hoisting operation should be kept clear of the transfer area
[单项选择]What generally occurs when the land is cooler than the nearby water? （）
A. A land breeze
B. A sea breeze
C. A norther
D. A prevailing westerly
[单项选择]What is TRUE of pressure/vacuum valves? （）
A. They are designed to provide for the flow of small volumes of tank atmospheres caused by thermal variations in a cargo tank
B. They should operate in advance of the pressure/vacuum breakers
C. They should be kept in good working order by regular inspection and cleaning
D. All of the above
[单项选择]Your assigned emergency stations aboard your vessel can be found on the ships （）.
A. muster list
B. certificate of inspection
C. clearance papers
D. permit to proceed
