单项选择题
A.can be absorbed through the skin B.causes irreversible damage to eye tissue C.is a very unstable product D.All of the above
A fishing vessel casualty must be reported to the Coast...
单项选择题A fishing vessel casualty must be reported to the Coast Guard if it involves（）.
A.loss of life B.an injury requiring only first aid C.$(SA)10，000 in property damage D.loss of equipment which doesn't reduce the vessel's maneuverability
