在R22、R134 A.R123三种工质下,对大气臭氧层破坏程度由大至小排列,正确的是下列哪一项?
A.R22、R123、R134a B.R134a、R22、R123 C.R123、R134a、R22 D.R22、R134a、R123正确答案A
在R22、R134 A.R123三种工质下,对大气臭氧层破坏程度由大至小排列,正确的是下列哪一项?
A.R22、R123、R134a B.R134a、R22、R123 C.R123、R134a、R22 D.R22、R134a、R123正确答案A