单项选择题
To determine the number of Able Seamen required on a mobile offshore drilling unit，you should check the（）.
A.load line certificate B.Operations Manual C.Safety of Life at Sea Certificate D.Certificate of Inspection
单项选择题 The use of sinking and dispersing chemical agents for removal of surface oil is（）.
单项选择题 The Safety Radio Certificate for the cargo Ship is issued（）.
单项选择题 The Safety of Life at Sea Convention was developed by the（）.
