A.under tow
B.fixed to the seabed
C.underway
D.All of the above
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A.destination
B.answer
C.time
D.ending
A.The motion of the apparent sun is along the ecliptic
B.Measurement of time is along the celestial equator
C.The speed of the Earth's revolution is not constant
D.There are variations in the Earth's rotational speed
A.Mine Safety Appliance Association
B.American Chemical Society
C.Marine Chemists Association
D.National Fire Protection Association
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
A.dump valve
B.deflector
C.separator
D.diverter
最新試題
Aboard a survival craft，ether can be used to（）.
An inflatable liferaft should be manually released from its cradle by（）.
Light Lists for coastal waters are（）.
Admiralty EasyTide（）.
Mean high water is the average height of（）.
After the boat is at the top of the davit heads，the davit arms begin moving up the tracks and are stopped by the（）.
An orange flag showing a black circle and square is a（）.
The daily predictions of the times and heights of high and low water for a selection of Standard Ports are given in（）.
Lines drawn through points on the Earth having the same atmospheric pressure are known as （）.
A man aboard a vessel，signaling by raising and lowering his outstretched arms to each side，is indicating（）.