EPA 608 CORE, TYPE 1 Examination Questions and Answers
The clean air act:15 November 1990 The technician certification deadline14 november 1994 Venting of cfc/hcfc refrigerants law took effect1 July 1992 Study of the ozone beganthe 1920's Which of the following is the most destructive to the ozone protective layer?nonwater soluble chlorin
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