The meaning of Flag H is “I have a pilot on board”.（）

Ro/Ro ships have doors at the bow or stern.（）

If they find out any serious deficiency,our ship will be detained. （）

Before coming here, ask the engine room for power and water on deck.（）

They are towed into positions and anchored there.（）

All clear!（）

The sailors should show relevant flags by day or pilot lamps at night.（）

The PSC officers will inspect the emergency power supply ，emergency steering gear, fire lines hydrants, fire hoses, fire hydrants, etc .（）

You know the most modern type of dry cargo carriers is the container ship.（）

Liners sail on regular routs and keep to a fixed timetable.（）