单项选择题
A.foam B.marine plywood C.steel D.fiberglass
The signal for fire alarm on a ship must be indicated（）...
单项选择题The signal for fire alarm on a ship must be indicated（）.
A.at each alarm bell B.at each alarm actuator C.near all exits D.on the station bill
The patrolman，while on duty on a passenger vessel，must ...
单项选择题The patrolman，while on duty on a passenger vessel，must have in his possession a(n)（）.
A.nightstick B.flashlight C.passenger list showing assigned berths D.A-I fire extinguisher
The only type of helicopter that may be refueled with t...
单项选择题The only type of helicopter that may be refueled with the engine running and the blades turning is（）.
A.a helicopter carrying cargo only B.a turbine-equipped helicopter C.a Sikorsky D.a helicopter carrying injured personnel in an emergency situation
