题目
Gyro compass has become one indispensable instrument in almost all merchant ships for its ability to detect the direction of ____ .A. true northB. magnetic northC. ship's trackD. relative motion
Gyro compass has become one indispensable instrument in almost all merchant ships for its ability to detect the direction of ____ .
A. true north
B. magnetic north
C. ship's track
D. relative motion
题目解答
答案
D. relative motion