单项选择题
Are you the（）（驾驶员）on duty?
A.officer B.engineer C.sailor D.purser
单项选择题 I would like to see the （）（轮机长）.
单项选择题 I would like to talk with the（二副）（）.
单项选择题 We should hoist national flag（）（按时）.
