简述SSS的号码分析过程。

A. the chocks at the bow of a towed vessel
B. the most forward，centermost point of a towed vessel such as a sturdy bow rail
C. the mast of a towed sailboat
D. a secure fitting near the bow of the towed vessel

A. 油环多、气环少
B. 气环多、油环少
C. 只有油环、没有气环
D. 只有气环、没有油环

A. 正确
B. 错误