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Russ88

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Russ88
In liquid oxygen containers for home breathing assistance: 1.  If one leaks a little bit, does using it first make more efficient use of the oxygen?  As in opening the valve to allow it...
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natalie_1982
I've always thought that to change the 's' to a 'z' in words like prioritise, apologise, agonise, finalise, etc is writing it the American way.  I have since been told that the original old...

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