A.中药有效成分主要从动植物或矿物质中提取,副作用小,增加剂量可使病情尽快好转 |
B.某人因受伤导致暗红色血液不断从小腿伤口流出,止血指施是指压受伤血管近心端 |
C.口对口吹气时,救护者一只手托起病人下颌,深吸一口气后对着病人口部用力吹入 |
D.心肺复苏时,先做30次心脏按压,保持气道畅通,再做2次人工呼吸,如此交替进行 |
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