A.当水面升至a时,你将看到的光斑静止在橡皮泥下方某处 |
B.缓慢加水至水而上升到P点以下的位置期间,光斑从P处缓慢下移再缓慢上移 |
C.你观察到光斑从P迅速下移到某一位置后再缓慢上移,最终光斑和橡皮泥P重合 |
D.你看到光斑从P迅速下降到某一位置后再缓慢上移,最终静止在橡皮泥P上方某处 |
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