单项选择题
A.Straight line B.Arc C.Parabola D.Hyperbola
A radar display which is oriented，so that north is alwa...
单项选择题A radar display which is oriented，so that north is always at the top of the screen，is called a(n)（）.
A.relative display B.composite display C.stabilized display D.unstabilized display
A radar display in which North is always at the top of ...
单项选择题A radar display in which North is always at the top of the screen is a(n)（）.
A.unstabilized display B.stabilized display C.composition display D.relative display
A radar contact will remain stationary on a relative mo...
单项选择题A radar contact will remain stationary on a relative motion radar display only when it is（）.
A.on the same course as your vessel B.at the same speed as your vessel C.on the same course and speed as your vessel D.on a reciprocal course at the same speed as your vessel
