物质 | 比热容c/ 【J/(kg·°C)】 |
水 | 4.2×103 |
煤油 | 2.1×103 |
砂石 | 约0.92×103 |
A.一杯水倒出一半,杯内剩余水的比热容变小 |
B.水和砂石放出相等热量,水的温度降低得较多 |
C.水的比热容表示水的温度升高1°C吸收的热量是4.2×103J |
D.质量相等的水和煤油,吸收相等热量,煤油温度升高得较多 |
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2