单项选择题
All entries in the official logbook must be signed by the master and（）.
A.the union representative B.the person aboat whom the entry concerns C.no one else D.one other crew member
单项选择题 All event relating to the voyage,such as ship’s position,speed and details of the weather, are recorded in（）.
单项选择题 All inflatable life rafts have（）.
单项选择题 All of the following are part of the fire triangle except（）.
