A.纸锅里的水未加热前,水是不会发生汽化现象的 |
B.纸锅里的水上方冒出“白气”是水蒸气遇冷液化而成的小水珠 |
C.纸锅里的水沸腾后温度将保持不变,若撤去酒精灯,则水将不会沸腾 |
D.水烧开时纸盒并未燃烧,这是因为水沸腾时温度不会再升高,没有达到纸燃烧的温度 |
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