更多"Uncharted lights, fog signals and r"的相关试题:
[单项选择]Uncharted lights，fog signals and radar beacon transmissions may be（）near the station.
A. encountered
B. met
C. contacted
D. seen
[单项选择]Full details of all lights and fog signals are shown on（）.
A. large scale chart
B. small scale chart
C. ocean chart
D. routing chart
[单项选择]In dense fog a vessel without operational radar may not be justified（）at all but should anchor if it is safe and practicable for her to do so.
A. to be underway
B. on under way condition
C. to stop engine
D. in being under way
[单项选择]In fog you observe your radar and determine that risk of collision exists with a vessel which is 2 miles off your port bow. You should（）.
A. stop your engines
B. sound the danger signal at two-minute intervals
C. hold course and speed until the other vessel is sighted
D. take avoiding action as soon as possible
[单项选择]Sometimes lights are（）by fog，haze，dust，smoke，or precipitation which may be present at the light，or between the light and the observer，and which is possibly unknown by the observer.
A. obscured
B. darkened
C. greyed
D. delighted
[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]The fog is lifted，so（）the radar．
A. close
B. open
C. switch off
D. switch on
[单项选择]The fog is too thick. Don’t（）the radar.
A. switch on
B. switch off
C. close
D. open
[单项选择]Radar makes it possible for us（）in dense fog.
A. to be sailing
B. sailing
C. sail
D. to sail
[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
[单项选择]The 10-cm radar as compared to a 3-cm radar of similar specifications will（）.
A. be more suitable for river and harbor navigation
B. provide better range performance on low lying targets during good weather and calm seas
C. have a wider horizontal beam width
D. have more sea return during rough sea conditions
[单项选择]The 3-cm radar as compared to a 10-cm radar with similar specifications will（）.
A. give better range performance in rain，hail，etc
B. display small targets in a mass of dense sea clutter at a greater range
C. have less sea return in choppy rough seas
D. display a more maplike presentation for inshore navigation
[单项选择]Radiation fog（）.
A. always forms over water
B. is formed by a temperature inversion
C. is thinnest at the surface
D. dissipates during the evening
[单项选择]The Emergency Position Indicating Radio beacon on a cargo vessel must be stowed（）.
A. in an inside passageway
B. in an approved bracket
C. so that it is accessible from the bridge of the vessel
D. so that it will float free if the vessel sinks
