单项选择题
A.Equator B.Areas including both North and South latitudes C.North and South Poles D.A narrow band along the central meridian
Traffic separation schemes adopted by the IMO are liste...
单项选择题Traffic separation schemes adopted by the IMO are listed in（）.
A.NM B.Ship's Routing C.Colreg D.Solas
The time required for a lighted aid to complete a full ...
单项选择题The time required for a lighted aid to complete a full cycle of light changes is listed in the Light List as the（）.
A.Set B.Frequency C.Period D.Function
The recording fathometer produces a graphic record of t...
单项选择题The recording fathometer produces a graphic record of the（）.
A.bottom contour only up to depths of 100 fathoms B.depth underneath the keel against a time base C.contour of the bottom against a distance base D.depth of water against a distance base
