1.使小车运动的力来自( )。
A.车轮 | B.橡皮筋 | C.轮轴 |
A.在一定限度内,橡皮筋缠绕的圈数越多,弹力越大 |
B.在一定限度内,橡皮筋缠绕的圈数越多,弹力越小 |
C.在一定限度内,橡皮筋缠绕的圈数越多,小车越慢 |
A.小车一定跑得更快了 |
B.橡皮筋很有可能会被损坏 |
C.小车一定跑得更慢了 |
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