单项选择题
A report of casualty to a mobile offshore drilling unit must include（）.
A.the estimated cost of damage to the unit B.an evaluation of who was at fault C.the amount of ballast on board D.the name of the owner or agent of the unit
单项选择题 A major health hazard of the product tert-butylamine is that it（）.
单项选择题 A fishing vessel casualty must be reported to the Coast Guard if it involves（）.
