A.甲图中出现高原反应是因为海拔高,空气稀薄,气压低 |
B.乙图中小科在进行马德堡半球实验时,选用不同直径的半球,拉开半球所用的力相同 |
C.丙图中停止沸腾的水,浇上冷水后重新沸腾说明气压减小,水的沸点升高 |
D.丁图中往B管中轻轻吹气,A管中的水面上升说明空气流速越大,压强越大 |
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