9.砂石的比热是0.92×103焦/(千克•℃),它表示的意思是( )
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| A. | 砂石每升高1℃必须吸收0.92×103焦的热量 | |
| B. | 0.92×103焦的热量可使1千克砂石的温度升高1℃ | |
| C. | 质量是1千克的砂石,温度每升高1℃吸收的热量是0.92×103焦 | |
| D. | 温度是1℃的砂石,每1千克吸收的热量是0.92×103焦 |