单项选择题
A.direct performance of deck or engine operations in a scheduled and fixed rotation
B.performance of maintenance work necessary for the vessel's safe operation，on a daily basis
C.performance of lookout duties
D.direct performance of cargo loading and discharge operations only
单项选择题 He is（）a carpenter as a chief officer.
单项选择题 Even in the absence of express instructions，the authority of the master of a ship is very large and（）to all acts that are usual and necessary for the employment of the ship.
单项选择题 During an abandonment or drill，the first person to arrive at the survival craft should（）.