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Which of the following refrigerant safety groups has the highest flammability and the highest toxicity? A . A 1 C . A 3 B .

Which of the following refrigerant safety groups has the highest flammability and the highest toxicity?
A. A1
C. A3
B. B1
D. B3
When lifting a heavy object by yourself, make certain that you
A. lift with your back.
B. avoid wearing a back brace.
C. lift with your legs.
D. avoid wearing gloves.
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