A.three barrels
B.four barrels
C.six barrels
D.eight barrels

A.procedures for accepting cargo securing devices
B.procedures for maintaining and repairing cargo-securing devices
C.record of cargo securing device inspections
D.All of the above

A.a tug comes alongside while the tanker is loading grade
B.and E cargoes B. a large，fresh oil spill is discovered immediately adjacent to the side of the tanker
C.there is an electrical storm in the vicinity
D.there is a fire on the dock or on a nearby vessel

A.was experienced
B.were experienced
C.has experienced
D.have experienced

A.rotor blades and landing gear
B.unloading of passengers
C.loading of cargo
D.pilot's visibility

A.prevent the generation of flammable or combustible gas in tanks
B.blow out cargo lines to prevent the build up of gas concentrations
C.dilute tank atmospheres to keep gas concentrations below the lower explosive limit
D.prevent fires in the pumproom by continually displacing flammable vapors

A.aid in the stripping and cleaning of cargo tanks
B.increase the rate of discharge of cargo
C.force toxic and explosive fumes from a cargo tank to vent to the outside atmosphere
D.lower the oxygen levels inside cargo tanks，making explosion nearly impossible

A.with
B.has
C.have
D.had

A.Apply ice-cold compress and renew every 4 hours
B.Commence artificial respiration immediately
C.Give enema
D.Pass catheter into bladder

A.prevent engine overheating
B.have proper air/gasoline fuel mixture ratio
C.be liquid- and vapor-tight
D.supply sufficient air to the intake manifold

A.When dead in the water，it is often difficult to find the neutral position and slight headway or sternway may result
B.When going directly from full ahead to full astern，there is complete steering control
C.When the vessel has headway and the propeller is in neutral，there is no effect on rudder control
D.When maneuvering in port，full ahead or astern power can usually be obtained without changing shaft RPM