单项选择题
A.barometer B.wind vane C.anemometer D.thermometer
Apparent time is based on().A.a fictitious sun moving a...
单项选择题Apparent time is based on().
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
Aphelion is the point where the Sun().A.and Moon and Ea...
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
Any firefighting equipment that is carried in addition ...
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