单项选择题
A.Evacuation should be from an area forward of the bridge
B.The vessel should be slowed to bare steerageway
C.If the hoist is at the stern，booms extending aft at the stern should be cradled with the topping lifts hove taut
D.The litter should not be touched until it has been grounded
单项选择题 When a rescuer finds an electrical burn victim in the vicinity of live electrical equipment or wiring，his first step is to（）.
单项选择题 What is the lifesaving signal for，You are seen - assistance will be given as soon as possible?（）
单项选择题 What is the lifesaving signal for You are seen -assistance will be given as soon as possible?（）