单项选择题
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 necesssary
单项选择题 A shipmate chokes suddenly，cannot speak，and starts to turn blue. You should（）.
单项选择题 A ship must have on board a first-aid kit that is approved by the（）.
单项选择题 A seaman is reported missing in the morning and was last seen after coming off the mid-watch. Which type of turn would you use to return to the trackline steamed during the night?（）