单项选择题
If our captain is not in his cabin, he must be on the（驾驶台）（）.
A. paint locker B. engine room C. bridge D. shore
单项选择题 Duty sailors will consider the conditions of （装卸货）（）.
单项选择题 You should （松）（）the mooring lines at the same time when the wind is big.
单项选择题 When we meet a（军舰）（）, we should lower national flag.
