单项选择题
Which of below device has the maximum coverage range（）
A.AIS
B.Radar
C.VHF
D.LRIT
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相关考题
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单项选择题
We took usual steps:sounding the depth, reversing and stopping engine,paying out anchor and 60 fathoms of chain cable in the depth of 12 fathoms.The operation above is（）.
A.berthing
B.searching
C.anchoring
D.picking up pilot -
单项选择题
Which of the following is not a factor which can interfere with the pulse of sound and cause a variation the depth reading?（）
A.salinity
B.temperature
C.the hydrostatic pressure
D.Vessel’s speed -
单项选择题
Who can contact the Designed Person?（）
A.the designated person
B.the captain
C.all senior officer
D.all officers and crew
