单项选择题
A.the time of day B.the seasons C.geography D.All of the above
The Earth has the shape of a(n) （）.A.sphereB.oblate sph...
单项选择题The Earth has the shape of a(n) （）.
A.sphere B.oblate spheroid C.spheroid of revolution D.oblate eggoid
The distance from the still water level (corrected for ...
单项选择题The distance from the still water level (corrected for tides and storm surge) to the bottom of the hull of a ship is the（）.
A.air gap B.freeboard C.penetration D.water depth
The distance between the surface of the water and the t...
单项选择题The distance between the surface of the water and the tidal datum is the （）.
A.range of tide B.height of tide C.charted depth D.actual water depth
