A.甲图A血管表示医生给病人静脉注射时,针头刺入的血管 |
B.乙图C表示人体肺部毛细血管网,B代表的血管是肺动脉 |
C.丙图中曲线代表氧气的变化,B可表示组织细胞周围的毛细血管 |
D.丁图中血液性质发生变化的部位为①和②处;体、肺循环起点均为心室,终点均为心房 |
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