第22题: [单项选择]下列选项中错误的是( )。 A. 辅助受热面按对流换热计算,同时要计算辐射换热量 B. 水冷壁传热按辐射换热计算,对流换热量忽略不计 C. 对流受热面传热按对流换热计算,辐射换热量忽略不计 D. 对流受热面传热按对流换热计算,同时要计算辐射换热量 参考答案:C
第23题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. To keep his old car and get a new one. B. To leave it in the garage to be repaired. C. To sell his car for a new one. D. To get his car repaired later. 参考答案:C 答案解析:[听力原文]
W:You are almost late.I was worried.Howls the car What did you find out about it
M:The me