What is a CORRECT reply to a pilot’s request, How’s your heading?（）

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

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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

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