单项选择题
When navigating a vessel，you（）.
A.Can always rely on a buoy to be on station
B.Can always rely on a buoy to show proper light characteristics
C.Should assume a wreck buoy is directly over the wreck
D.Should never rely on a floating aid to maintain its exact position
点击查看答案&解析
相关考题
-
单项选择题
When latitude and longitude are used，these shall be expressed in（）（and decimals of a minute if necessary），north or south of the Equator and east or west of Greenwich.
A.Fathoms and meters
B.Miles and kilometers
C.Arc and degrees
D.Degrees and minutes -
单项选择题
What is an ebb current（）.
A.A current at minimum flow
B.A current coming in
C.A current going out
D.A current at maximum flow -
单项选择题
What is a lighted safe water mark fitted with to aid in its identification（）.
A.A spherical topmark
B.Red and white retroreflective material
C.A sequential number
D.A red and white octagon
