Injectors for use with heavy fuel oil must be cooled by either water or light oil to_____.

When you read the sailing directions, you should notice that this is one of a series of publications produced by the（）which should be consulted by users of Admiralty Charts.

For details of these and other lights the larger scale charts and Admiralty Lists should be （）.

It should be apparent that little or nothing is gained by opening a drain at the same time as or after admitting steamThe above sentence probably means （）.

What is the most important source of information to be used in correcting charts and keeping them up to date（）.

Dunnage may be used to protect a cargo from loss or damage by（）.

What should be used to steer an open lifeboat if the rudder becomes lost or damaged?（）

When loading or discharging dry mud or cement，crew members should use goggles and（）.

All charts and publications should be kept up to date with the（）amendments

During counterflooding to correct a severe list or trim aggravated by an off-center load，a ship suddenly takes a list or trim to the opposite side. You should（）.

During counterflooding to correct a severe list aggravated by an off-center load，your vessel suddenly takes a list or trim to the opposite side. You should（）.

Before being used the fuel service tank should be drained of （）.