A.observer's meridian
B.Greenwich meridian
C.body's meridian
D.zenith distance
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A.blue rotating light
B.intermittent flashing amber/yellow light
C.flashing white light
D.flashing sidelight
A.located in an air-conditioned area
B.mounted in the passenger compartment
C.protected by a collision bulkhead
D.permanently mounted
A.Three lights in a vertical line，the highest and lowest red and the middle white，and anchor lights
B.Three lights in a vertical line，the highest and lowest red and the middle white，ONLY
C.Anchor lights ONLY
D.Anchor lights and sidelights ONLY
A.vessel laying cable
B.vessel towing a submerged object
C.vessel not under command
D.air cushion vessel
A.Opening and closing the throttle
B.Rocking the wings
C.Flashing the navigational lights off and on
D.Flashing Morse T
最新試題
An all-round flashing yellow light may be exhibited by a(n)（）.
Explosive and flammable gasses are most likely to be encountered on a vessel（）.
An entry of water，gas，oil，or other formation fluid into the wellbore is called a（）.
All of the following vessels are “restricted in their ability to maneuver” EXCEPT a vessel （）.
An indirect radar echo is caused by a reflection of the main lobe of the radar beam off the observer’s vessel. Which of the following is NOT a characteristic of indirect echoes? （）
An example of a grade C product is（）.
Antiseptics are used principally to（）.
An authorized light to assist in the identification of submarines operating on the surface is a(n)（）.
An icebreaker displaying a flag hoist which consists of the code letters “WO” (Whiskey Oscar) is indicating that（）.
All personnel on board a vessel should be familiar with the rescue boat’s（）.