A.3% B.5% C.7% D.9%
A.1:10~1:25 B.1:25~1:50 C.1:50~1:100 D.1:100~1:200
A.風(fēng)浪較大 B.風(fēng)浪較小 C.潮汐較大 D.潮汐較小