(1)如图甲所示,用胶头滴管吸取斑马鱼幼鱼后,将其平置于带凹槽的载玻片中,使幼鱼浸没在清水中。然后将载玻片放在载物台上,用
(2)同学们进一步观察幼鱼尾部的血液流动后,绘制了血液流动示意图(“(“→”表示血液流动方向)。据图分析,血管A是
(3)与课本中“用显微镜观察小鱼尾鳍内血液的流动”这一实验相比,选择斑马鱼幼鱼作为实验材料的优点有
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