单项选择题
A.who have performed work for 14 hours
B.who have performed work in a scheduled rest period
C.who have performed work in a scheduled work period
D.who works hard
单项选择题 The hatch at the after end of the canopy in a lifeboat（）the after lifting hook, painter, and tow line.
单项选择题 How many hours of rest is the minimum required in a normal day?（）
单项选择题 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（）.