单项选择题
During the course of a voyage，a seaman falls on the main deck and injures his ankle. The Master should submit a Report of Marine Accident，Injury or Death if the（）.
A.injury results in loss of life only B.injury is the result of misconduct C.injured is incapacitated D.injured needs first aid
单项选择题 After a person has been revived by artificial respiration，he should be（）.
单项选择题 According to the Chemical Data Guide，what does ethyl chloride produce when ignited?（）
单项选择题 A victim is coughing and wheezing from a partialobstruction of the airway. An observer should （）.
