题目

质量为4千克的水，温度升高了500C。求：水吸收的热量 Q吸。[c水=4.2×103 焦/(千克· 0C )] 答案：Q吸= cmΔt                                             2分= 4.2×103焦/ (千克——Hey, can I ask you a favor? ――_______ A．Here you are       B．just as I thought     C．how is it going?     D．what can I do for you?