You are checking the D oxygen tank in the ambulance and note that the reading on the pressure regulator reads 1,000 psi. You should recognize that the tank is:

Name: You are checking the D oxygen tank in the ambulance and note that the reading on the pressure regulator reads 1,000 psi. You should recognize that the tank is:
Brand: Quizplus
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Question

Quizplus · Accepted Answer

A standard D oxygen tank holds about 2,000 psi when full, so a reading of 1,000 psi indicates it is approximately half full.

You Are Checking the D Oxygen Tank in the Ambulance