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單項(xiàng)選擇題

Top and inner graduated borderlines of the chart are（）.

A.scales of latitude
B.scales of longitude
C.compass rose
D.source data

單項(xiàng)選擇題

You are on watch at night in clear visibility and the vessel has just been anchored.The first thing that you should do after the anchor has been let go is to（）.

A.stop the engines
B.turn off the running lights and turn on the anchor lights
C.take at least two bearings of prominent shore lights
D.lower the accommodation ladder and illuminate it