Test # 87
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1300 questions in 130 tests. Each test contains 10 questions.
Idiom of the Day
lock (something) in or lock in (something)
to make something (such as a rate of interest at a bank) permanent over a period of time
We locked in the mortgage of our house for five years because the interest rates were low.
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Precautions while using Oxygen Therapy
Do not store full and empty cylinders together
When a cylinder is almost empty, close the valve and mark the cylinder as empty. Do not store full and empty cylinders together. Secure and transport oxygen cylinders correctly. Check with your state or territory department of transport regarding the transport of oxygen in cars as safety standards may vary from state to state.