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單項(xiàng)選擇題

How many hours of rest is the minimum required in a normal day?（）

A.14 hours
B.10 hours
C.6 hours
D.It does not matter as long as my overtime is paid for

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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

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

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