第27题: [多项选择]锅炉大修时化学监督资料检查的重点是该台锅炉本运行周期() A. 蒸汽品质,以及汽水共腾次数 B. 锅炉运行工况,以及满水或缺水的次数时间 C. 补给水、凝结水、给水、锅炉水等水质及蒸汽分析资料 D. 停炉放水的次数与时间,停(备)用锅炉保护与未保护时间 参考答案:A,B,C,D
A. Americans are worried about only two things. B. Americans are worried more about death than about taxes. C. Americans are as worried about death as about taxes. D. Americans are as sure of taxes as of deat 参考答案:D 答案解析:[听力原文] Americans often say that there are only two things a person can be sure of in life: death