A.can be absorbed through the skin
B.causes irreversible damage to eye tissue
C.is a very unstable product
D.All of the above
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A.dump valve
B.deflector
C.separator
D.diverter
A.poor fix
B.good fix
C.poor signal quality
D.good signal quality
A.on an even keel
B.listing about 1° to the side the light is displayed on
C.listing over 5° With the light displayed on the high side
D.listing，and the chutes should be directed to the side where the light is displayed
A.two red lights
B.one green light
C.one white light
D.one amber light
A.circle of equal altitude
B.parallel of declination
C.parallel of altitude
D.vertical circle
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After launching，an inflatable raft should be kept dry inside by（）.
After the boat is at the top of the davit heads，the davit arms begin moving up the tracks and are stopped by the（）.
The Lists of Meteorological Observation Stations can be found in（）.
The latest known details of lights are given in（）.
To predict the actual depth of water using the Tide Tables，the number obtained from the Tide Tables is（）.
An inflatable liferaft should be manually released from its cradle by（）.
The program of graphical predictions of height against time for a period of up to seven consecutive days is contained in（）.
When an azimuth of the Sun has been taken and the deviation of the standard magnetic compass computed，the watch officer should record the results（）.
The light vessel is reported（）.
After being launched from a vessel，totally enclosed survival craft which have been afloat over a long period require（）.