A.鲫鱼通过尾部和躯干部的摆动以及鳍的协调作用游泳 |
B.蚯蚓的体壁有发达的肌肉,肌肉与刚毛配合使身体蠕动 |
C.家鸽发达的胸肌附着在胸骨上牵动两翼完成飞行动作 |
D.家兔的一组骨骼肌牵拉骨绕关节活动完成骨的移位及复位 |
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