i just googled, found a site,on line practice test, it may help you.
http://www.wiziq.com/tests/refrigeration-and-air-conditioning
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i just googled, found a site,on line practice test, it may help you.
http://www.wiziq.com/tests/refrigeration-and-air-conditioning
Interesting link with some really different questions to test your knowledge.
Nice link moideen