A. alter course to port B. maintain course and speed C. alter course to starboard D. maintain course and reduce speed
A. shown from a brown tower B. equipped with a fog diaphone C. lighted 24 hours D. is 79 feet (24 meters) high
A. and Moon and Earth form a right angle B. and Moon and Earth are in line C. crosses the celestial equator D. is farthest from the Earth
A. a fictitious sun moving along the celestial equator B. the visible sun moving along the ecliptic C. the Moon's motion in relation to the Sun D. the movement of the first point of Arie
A. barometer B. wind vane C. anemometer D. thermometer
A. absolute humidity decreases B. relative humidity increases C. specific humidity decreases D. dew point rise
A. Green B. White C. Red D. Alternating white and gree
A. Masthead lights and sidelights B. One sidelight，the masthead lights and stern light C. Both sidelights D. Stern light
A cable clamp B. A fishplate，flounder，or towing plate C. A pad eye D. The towing bitt
A. Green diamond B. Green triangle C. Red diamond D. Red square
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