If in doubt as to the true water level when a boiler is being oil-fired, you should （）.

A fire in a pile of canvas would be classified as a （）.

A fire in a pile of dunnage would be classified as a （）.

A racetrack turn would be better than a Williamson turn in recovering a man overboard if （）.

A （） boiler is an auxiliary boiler sometimes included in a steamships installation for supplying steam to auxiliaries in port.

Each fire hydrant serving machinery spaces containing oil fired boilers，internal combustion machinery，or oil fuel units must be equipped with a（）.

______no air or water, there would be no life in the world.

A bridge would cost far more than a tunnel, but you would be able to go by rail or by car on a bridge, whereas a tunnel would provide a rail link only.

I thought that this would be a funny trick（）Jim.

In deciding to detain a ship or not, the PSCO would better not（）

Combustible material stored in a compartment adjacent to a compartment where there is a fire may be ignitedThis ignition can occur by （）.

A foam-type portable fire extinguisher would be most useful in combating a fire in（）.