A.
循环热效率 mso-fareast-font-family:宋体;color:#666666;mso-font-kerning:0pt;mso-ansi-language: EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">Ƞ 越小,热机循环工作越有效;制冷系数 宋体;color:#666666;mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language: ZH-CN;mso-bidi-language:AR-SA">ε 越大,制冷循环工作越有效
B.
循环热效率 mso-fareast-font-family:宋体;color:#666666;mso-font-kerning:0pt;mso-ansi-language: EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">Ƞ 越大,热机循环工作越有效;制冷系数 宋体;color:#666666;mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language: ZH-CN;mso-bidi-language:AR-SA">ε 越小,制冷循环工作越有效
C.
循环热效率 mso-fareast-font-family:宋体;color:#666666;mso-font-kerning:0pt">Ƞ 越大,热机循环工作越有效;制冷系数 宋体;color:#666666;mso-font-kerning:0pt">ε 越大,制冷循环工作越有效
D.
循环热效率 mso-fareast-font-family:宋体;color:#666666;mso-font-kerning:0pt;mso-ansi-language: EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA">Ƞ 越小,热机循环工作越有效;制冷系数 宋体;color:#666666;mso-font-kerning:0pt;mso-ansi-language:EN-US;mso-fareast-language: ZH-CN;mso-bidi-language:AR-SA">ε 越小,制冷循环工作越有效