單項選擇題What describes a flood current().

A.Horizontal movement of the water toward the land after high tide
B.Horizontal movement of the water toward the land after low tide
C.Horizontal movement of the water away from the land following high tide
D.Horizontal movement of the water away from the land following low tide


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1.單項選擇題What area of the earth cannot be shown on a standard Mercator chart().

A.Equator
B.Areas including both North and South latitudes
C.North and South Poles
D.A narrow band along the central meridian

2.單項選擇題Traffic separation schemes adopted by the IMO are listed in().

A.NM
B.Ship's Routing
C.Colreg
D.Solas

4.單項選擇題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

5.單項選擇題The points on the earth’s surface where the magnetic dip is 90° are().

A.Along the magnetic equator
B.Connected by the isoclinal line
C.The isopors
D.The magnetic poles