If there is sufficient sea room,alteration of ______ may be the most effective action to avoid close-quarters situation.
A.speed and course
B.speed alone
C.course alone
D.speed or course
正确答案是C
If there is sufficient sea room,alteration of ______ may be the most effective action to avoid close-quarters situation.
A.speed and course
B.speed alone
C.course alone
D.speed or course
正确答案是C