A.98% B.95% C.90%
A.200m;100nmile B.200m;200nmile C.150m;150nmile
A.压载水置换(D-1)和压载水处理(D-2) B.压载水处理(D-1)和压载水置换(D-2) C.压载水处理(D-0)和压载水置换(D-1)