單項(xiàng)選擇題

If the electronic chart is part of an ECDIS,it must display the minimum data required by IMO/IHO,to include all of the following EXCEPT（）.

A.hydrography
B.aids to navigation
C.tidal currents
D.regulatory boundaries

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單項(xiàng)選擇題

（）on still water indictes how loading weight distribution affects on longitudinal strength.

A.Bending moment
B.local strength
C.shear force
D.displacement

單項(xiàng)選擇題

ANCHOR HAS ITS OWN CABLE TWISTED AROUND IT defines（）.

A.foul of anchor
B.dropping anchor
C.weighing anchor
D.walking back anchor