A.Ⅰ B.Ⅰ,Ⅱ C.Ⅰ,Ⅱ,Ⅳ D.Ⅰ~Ⅳ
A.0'.0 B.+2'.0 C.-2'.0 D.视海区内风、流方向而定
A.128'.7 B.129'.7 C.130'.7 D.131'.7
A.132'.6 B.137'.0 C.141'.3 D.145'.7
A.129'.5 B.131'.6 C.133'.7 D.135'.8