A.人吸入含新冠病毒的气溶胶患病,气溶胶是新冠肺炎的传播途径 |
B.新冠病毒侵入人体后通过分裂生殖产生新个体危害人体健康 |
C.采取全民核酸检测、体温测量、行程码查验的目的是发现控制传染源 |
D.接种新冠疫苗使人产生抗体,利于筑起群体免疫屏障保护易感人群 |
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