7. For ship position, which one of the followings has been verified?
(A) Running Fix
(B) EP position
(C) AP position
(D) GPS position .
答案:登入後查看
統計: A(558), B(192), C(113), D(572), E(19) #2334842
統計: A(558), B(192), C(113), D(572), E(19) #2334842