单项选择题
A. Load Line Certificate
B. Certificate of Inspection
C. Safety of Life at Sea Certificate
D. operations manual
单项选择题 To determine the number of able seamen required on an inspected vessel，you should check the （）.
单项选择题 To determine the number of Able Seamen required on a mobile offshore drilling unit，you should check the（）.
单项选择题 The use of sinking and dispersing chemical agents for removal of surface oil is（）.