单项选择题
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 -
单项选择题
（）on still water indictes how loading weight distribution affects on longitudinal strength.
A.Bending moment
B.local strength
C.shear force
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单项选择题
ANCHOR HAS ITS OWN CABLE TWISTED AROUND IT defines（）.
A.foul of anchor
B.dropping anchor
C.weighing anchor
D.walking back anchor
