阿摩線上測驗
35. The following signals are distress signals except:
(A) Flames on the vessel.
(B) Basket hanging in the rigging.
(C) A smoke signal giving off orange-coloured smoke.
(D) A rocket parachute flare.
答案：登入後查看
統計： A(51), B(297), C(108), D(26), E(0) #3136172
統計： A(51), B(297), C(108), D(26), E(0) #3136172
