What is a CORRECT reply to a pilot’s request, How’s you……

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

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

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

单项选择题Manoeuvring information can not be obtained from（）.

A.construction plans
B.sea trials
C.calculation estimates
D.SMS procedure file

单项选择题Fog is likely to occur when there is little difference between the dew point and the（）.

A.relative humidity
B.air temperature
C.barometric pressure
D.absolute humidity