A.the Sun B.stars C.planets D.All of the above
A.North B.South C.East D.West
A.Open-faced diamond B.Diamond with a cross C.Circle D.Square
A.flashing red lights upstream and fixed red lights downstream B.yellow unlighted buoys C.signs and/or flashing red lights D.red daymarks upstream and green daymarks downstream
A.exhibits a change in magnitude B.has a changing declination C.is increasing in SHA D.is also known as a red giant
A.a hard sand shoal marked with a light B.completely submerged at all stages of the tide C.surrounded by rocks awash at low water spring tides D.a small，low，sandy islet surrounded by shoal water
A.the departure B.the polar arc C.longitude D.Greenwich hour angle
A.Falkland Current B.Brazil Current C.Norway Current D.Benguela Current
A.painted color B.light color and phase characteristic C.type of structure D.All of the above
A.Moon being at its maximum declination B.Moon crossing the equator C.Sun and Moon both being near 0°declination D.Moon being at perigee
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