单项选择题
A.Ship in the wrong B.Responsible vessel C.Vessel to be responsible D.Wrong ship
The self-contained breathing device should not be used ...
单项选择题The self-contained breathing device should not be used in which situation（）.
A.Oxygen deficient spaces B.Compartments containing poisonous vapors C.Fighting fires that produce heavy smoke D.Underwater search
The rescuer can best provide an airtight seal during mo...
单项选择题The rescuer can best provide an airtight seal during mouth-to-mouth resuscitation by pinching the victim’s nostrils and（）.
A.Cupping a hand around the patient's mouth B.Keeping the head elevated C.Applying his mouth tightly over the victim's mouth D.Holding the jaw down firmly
The key to rescuing a man overboard is（）.A.Good communi...
单项选择题The key to rescuing a man overboard is（）.
A.Good communication B.A dedicated crew C.Good equipment D.Well-conducted drills
