质量为50kg的水,温度从25℃升高到45℃,需要吸收多少J的热量?[水的比热容 发布时间:2017-07-29 22:03 │ 来源:www.tikuol.com 题型:问答题 问题: 质量为50kg的水,温度从25℃升高到45℃,需要吸收多少J的热量?[水的比热容为4.2×103J/(kg•℃)]
题型:问答题 ______ the project in time, the staff were working at weekends.A.CompetingB.Having completedC.To have completedD.To complete 查看答案