单项选择题
Duty sailors will consider the conditions of （装卸货）（）.
A. cargo handled B. cargo handles C. cargo handle D. cargo handling
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.
单项选择题 PSC officers will come on board for(检查)（）next Monday.
