A. “场中打稻”中通过摔打的方法能将稻粒从秆上打落下来是因为稻粒有弹性 |
B. “赶稻及菽”中牛拉石碾的同时石碾也拉牛 |
C. “透火焙干”中把湿纸贴在墙上利用了湿纸受到的重力 |
D. “炒蒸油料”中在锅中翻炒的目的是通过做功的方法改变油料的内能 |
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