Smell the flowers before you go to sleep,and you may just________sweet dreams. A.keep up with B.put up with C.end up with D.catch up with 答案:C如图是比较不同燃料热值的装置. (1)酒精的热值为3.0×107J/kg,表示_______ _____. (2)当酒精和碎纸片完全燃烧时,需要记下_____ _______. (3)在(a)装置中,酒精的质量为10g,烧杯中水的质量为200g、初温为20℃.点燃酒精直至烧完,此时温度计示数上升到70℃,则水吸收的热量为____ ________J;给水加热的效率为_____ ___.(水的比热容为4.2×103J/(kg·℃)