单项选择题
A.Steady B.Eased to 10 rudder C.checked D.Passing 50
Shipboard Emergency Drills must be carried out at least...
单项选择题Shipboard Emergency Drills must be carried out at least（）on board cargo ship.
A.Once every third year B.Once a month C.Once a year D.Once a week
Full details of all lights and fog signals are shown on...
单项选择题Full details of all lights and fog signals are shown on（）.
A.large scale chart B.small scale chart C.ocean chart D.routing chart
What is it called when it is possible to ignite the vap...
单项选择题What is it called when it is possible to ignite the vapour above the oil?（）
A.Flash point B.Boiling point C.Ignition point D.Pour point
