A.新冠疫苗储存温度越低,疫苗分子热运动越剧烈 |
B.社区卫生中心接种点弥漫着消毒水味道,是因为分子在不停地做无规则运动 |
C.注射疫苗前用酒精消毒,人手臂会感觉凉爽是因为酒精升华吸热 |
D.戴口罩的护士的护目镜容易起“雾”,是水的汽化现象 |
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