消毒对象 | 生食瓜果 | 餐饮具 | 肝炎 传染品 | 毛巾 | 厕所 | ||||
原料:清水 | 1:1000 | 1:500 | 1:500 | 1:200 | 1∶25 | 1∶300 | 1∶100 | 1∶200 | 1∶100 |
消毒时间 | 10 | 5 | 10 | 5 | 60 | 5 | 3 | 5 | 3 |
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