EXERCISE-3
1) Demand valve is for control the flow of oxygen to the driver.
2) The cylinder is used to store oxygen under high pressure.
3)The contents gauge is present indicate the amount of oxygen in the cylinder.
4)The cylinder is use for transporting oxygen with the driver.
5) Depth gauge is designed to indicate the depth of the water.
6)The diving mask is designed to see clearly under water.
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