A. 销售电力 B. 销售自来水 C. 销售房屋 D. 销售热力
A. a cylinder air charge of higher pressure B. increased pumping losses C. less valve overlap D. reduced blow-by
A. 重大风险信息 B. C3信息登记错误 C. 严重偏离 D. 由A级评定为A+级
A. 正确 B. 错误