时间/ min | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
温度/℃ | 12 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | -1 |
回答下列问题:
(1)用温度计测量温度,应将温度计插入
A.试管的水中 B.冰与食盐的混合物中 C.空气中
(2)在4min—5min时间内,试管中的水
A.吸热 B.放热 C.不吸热不放热
(3)根据表中数据可以认为:水的凝固点与冰的熔点
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