The bilge pump on a fishing vessel（）.

On a ship，when may a work vest be substituted for a required life preserver?（）

The discharge side of every fire pump must be equipped with a（）.

The carrier is liable for loss of or damage to the goods or delay in delivery caused by fire，（）the claimant proves that the fire arose from fault or neglect on the part of the carrier，his servants or agents.

Operation of the valve control release on a fixed CO2 system must immediately（）.

The all-purpose nozzle will produce a fog spray when you（）.

The best method of extinguishing a class A fire is to（）.

Small quantities of flammable liquids needed at a work site should be（）.

One disadvantage of using regular dry chemical (sodium bicarbonate) in firefighting is that（）.

The canvas covering of fire hose is called the（）.