单项选择题
You are using a radar in which your own ship is shown at the center，and the heading flash always points to 0°. If bearings are measured in relation to the flash，what type of bearings are produced?（）.
A.Relative B.TRUE C.Compass D.Magnetic
单项选择题 Compass deviation is caused by（）.
单项选择题 Compass error is equal to the（）.
单项选择题 Deviation in a compass is caused by the（）.
