单项选择题
A.variation B.compass error C.deviation D.earth's magnetic force
（）the repeater compass with the master compass，please.A...
单项选择题（）the repeater compass with the master compass，please.
A.Similize B.Clock C.Synchronize D.Position
My gyro-compass error is（）.A.east two degreesB.two degr...
单项选择题My gyro-compass error is（）.
A.east two degrees B.two degrees east C.two east degrees D.two-degrees east
There is a possibility that small vessel，ice and other ...
单项选择题There is a possibility that small vessel，ice and other floating objects may not be（）by radar at an adequate range.
A.reflect B.shown C.detected D.defected
