你可能感興趣的試題

單項(xiàng)選擇題

A vessel shall be deemed to be overtaking when she can see at night（）.

A.only the sternlight of the vessel
B.a sidelight and one masthead light of a vessel
C.only a sidelight of the vessel
D.any light except the masthead lights of the vessel

單項(xiàng)選擇題

The temperature at which the air is saturated with water vapor and below which condensation of water vapor will occur is referred to as the（）.

A.precipitation point
B.vapor point
C.dew point
D.absolute humidity