单项选择题
A shipmate suffers a heart attack and stops breathing. You must（）.
A.administer oxygen B.immediately check his pulse and start CPR C.make the victim comfortable in a bunk D.immediately give a stimulant，by force if necessary
单项选择题 A ship having continuous closely spaced transverse strength members is（）.
单项选择题 A shepherd’s crook is used to（）.
单项选择题 A set of interior steps on a ship leading up to a deck from below is know as（）.
