更多"Preferred channel buoys indicate th"的相关试题:
[单项选择]When approaching a preferred-channel buoy，the best channel is NOT indicated by the（）.
A. light characteristic
B. color of the uppermost band
C. shape of an unlighted buoy
D. color of the light
[单项选择]A preferred-channel buoy may be（）.
A. lettered
B. spherical
C. showing a white light
D. All of the above
[单项选择]A preferred-channel buoy will show a（）.
A. white light whose characteristic is Morse (A)
B. group-occulting white light
C. composite group-flashing (2 + 1) white light
D. composite group-flashing (2 + 1) red or green light
[单项选择]A lighted preferred-channel buoy may show a（）.
A. fixed red light
B. Morse (A) white light
C. composite group-flashing light
D. yellow light
[单项选择]Preferred channel marks are aids to navigation which all following marks other than（）．
A. channel junctions
B. bifurcations
C. fishing traps
D. wrecks or obstructions
[单项选择]Preferred channel marks are colored with（）．
A. black and green bands
B. red and green bands
C. red and yellow bands
D. yellow and green bands
[单项选择]The changes in the channel’s sands and buoys on this coast are （） this chart can not be considered as a safe guide of the channel．
A. frequent
B. so frequent
C. frequent that
D. so frequent that
[单项选择]Buoys which mark isolated dangers are painted with alternating（）.
A. red and black bands
B. green and black bands
C. red and white stripes
D. green and white bands
[单项选择]Buoys are marked with reflective material to assist in their detection by searchlight. Which statement is TRUE? （）
A. A safe-water buoy will display red and white vertical stripes of reflective material
B. All reflective material is white because it is the most visible at night
C. A special-purpose mark will display either red or green reflective material to agree with its shape
D. A preferred-channel buoy displays either red or green reflective material to agree with the top band of color
[单项选择]The ship is moored（）buoys.
A. of
B. on
C. alongside
D. to
[单项选择]Safe water buoys may show ONLY（）.
A. flashing red lights
B. flashing green lights
C. white lights
D. yellow lights
[单项选择]Fishing gear with buoys ahead（）you.
A. of
B. on
C. for
D. at
[单项选择]Lighted white and orange buoys must show which color light?（）
A. Orange
B. White
C. Red
D. Alternating yellow and white
[单项选择]Buoys which mark dredging areas are painted（）.
A. black
B. yellow
C. green
D. red
[单项选择]Vessels lying afloat at buoys for more than 24 hours should use anchor chain for（）and insurance wire for（）.
A. bow mooring／stern line
B. forward spring／after spring
C. forward breast rope／forward spring
D. slip rope／stern line
[单项选择]Buoys which only mark the left or right side of the channel will never exhibit a light with which characteristic? （）
A. Flashing
B. Quick flashing
C. Composite group flashing
D. Equal interval (isophase)
[单项选择]On a ship，how many ring buoys are required to have a buoyant line attached?（）
A. One ring life buoy
B. One ring life buoy on each side of the ship
C. Three ring life buoys
D. Two ring life buoys on each side of the ship
