单项选择题

Apparent wind speed blowing across a ship under tow can be measured by a(n)（）.

A.barometer
B.wind vane
C.anemometer
D.thermometer

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单项选择题

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 Aries

单项选择题

Aphelion is the point where the Sun（）.

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

单项选择题

Any firefighting equipment that is carried in addition to the minimum required number on a ship must（）.

A.meet the applicable standards
B.be marked as additional equipment
C.be stowed in a separate area
D.All of the above