A.long, widensB.long, wideC.length, widensD.length, wid……

单项选择题It is customary in shipping practice to quote freight rates（）weight or measurement,ship’s option.

A.on the basis of
B.as a result of
C.arise from
D.come into being

单项选择题When underway in a channel,you should keep to the（）.

A.middle of the channel
B.starboard side of the channel
C.port side of the channel
D.side of the channel that has the widest turns

单项选择题（）is not ordinarily applied to passenger or to combination passenger and freight ships.

A.displacement tonnage
B.deadweight tonnage
C.registered tonnage
D.gross tonnage

单项选择题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

单项选择题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