The primary reason for placing covers over storage batteries is to（）.

There is plenty of（）at this area.

Continuous sounding of a fog whistle by a vessel is a signal（）.

The injured stevedore paid（）attention to the loading instructions from the chief Officer.

You notice smoke coming from an open laundry room doorway．After activating the fire alarm，which of the following would you do FIRST（）.

The first the Second Mate knew of the fire was the sounding of the emergency alarm，which had been（）from the engine room.

While your vessel is docked port side to a wharf，a sudden gale force wind causes the vessel’s bow lines to part.The bow begins to fall away from the dock，and no tugs are immediately available.Which measure（s）should you take FIRST（）.

The crew was unable to（）access to the engine room due to the extreme heat.

There is something wrong with our radar．All kinds of objects can’t be clearly（）within the definite range.

The master should（）necessary precautions to prevent accidents or damage.