更多"A flashing light is a light that（）."的相关试题:
[单项选择]A buoy with a composite group-flashing light indicates a(n)（）.
A. anchorage area
B. fish net area
C. bifurcation
D. dredging area
[单项选择]A message by flashing light consists of the call，the identity，the ending，and the（）.
A. reply
B. text
C. time
D. answer
[单项选择]A flashing green light displayed at a single lock means that the lock is（）.
A. ready for entrance
B. ready for entrance，but gates cannot be closed completely
C. being made ready for entrance
D. not ready for entrance
[单项选择]An all-round flashing yellow light may be exhibited by a(n)（）.
A. vessel not under command
B. air cushion vessel in the nondisplacement mode
C. vessel towing a submerged object
D. vessel engaged in diving operations
[单项选择]A flashing red light displayed at a single lock means that the lock（）.
A. is ready to use but vessels must stand clear
B. is ready to use and vessels may approach
C. cannot be made ready immediately and vessels shall stand clear
D. cannot be made ready immediately but vessels may approach
[单项选择]A light characteristic of composite group flashing indicates that there is a(n)（）.
A. sharp turn in the channel
B. narrowing in the channel at that point
C. junction in the channel
D. obstruction that must be left to port
[单项选择]A bronze bearing liner with a lead-tin flashing has a milky-white color over most of its surface and some areas of exposed bronze, the white coloring indicates（）
A. proper break-in wear
B. improper break-in wear
C. relocation of the overlay flashing
D. water contamination of the lube oil system
[单项选择]A vessel showing a green light over a white light in a vertical line above the level of the sidelights is（）.
A. engaged in underwater construction
B. under sail and power
C. a pilot vessel
D. trawling
[单项选择]A vessel showing a yellow light over a white light at night is a vessel（）.
A. engaged in piloting
B. towing astern
C. engaged in fishing
D. in distress
[单项选择]A towing light is a yellow light having the same characteristics as a(n)（）
A. special flashing light
B. anchor light
C. sternlight
D. masthead light
[单项选择]A light that has a light period shorter than its dark period is described as（）.
A. flashing
B. pulsating
C. occulting
D. alternating
[单项选择]Horton Point Light（）.
A. is 14 feet above sea level
B. has a fixed green light
C. is shown from a white square tower
D. is synchronized with a radio beacon
[单项选择]A towing light（）.
A. flashes at regular intervals of 50-70 flashes per minute
B. is yellow in color
C. shows an unbroken light over an arc of the horizon of not less than 180°nor more than 225°
D. All of the above
