A.naphtha，vm and p
B.tridecanol
C.cottonseed oil
D.camphor oil
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A.piperyline
B.motor gasoline
C.kerosene
D.mineral spirits
A.blowout
B.kick
C.gusher
D.flow
A.Carbon dioxide
B.Dry chemical
C.Foam
D.All of the above
A.observer's meridian
B.Greenwich meridian
C.body's meridian
D.zenith distance
A.blue rotating light
B.intermittent flashing amber/yellow light
C.flashing white light
D.flashing sidelight
最新試題
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 “on-load” release system on a survival craft means the cable can be released（）.
An icebreaker assisting a vessel through an ice field would display a visual signal consisting of the code letter “E” (Echo) to signify that “（）”.
All Loran-C transmitting stations are equipped with cesium frequency standards which permit （）.
All of the following information concerning lighted aids to navigation may be read directly from the Light List EXCEPT the（）.
Antiseptics are used principally to（）.
All of the following are part of the fire triangle EXCEPT（）.
An “ABC” dry chemical fire extinguisher would be LEAST effective against a fire in（）.
An all-round flashing yellow light may be exhibited by a(n)（）.
All of the following vessels are “restricted in their ability to maneuver” EXCEPT a vessel （）.