(1)填写下列数码对应的结构名称:①
(2)在使用显微镜的实验中,当调节粗准焦螺旋使镜筒下降时,眼睛应注视[ ]
(3)当光线弱时我们用
(4)用显微镜观察制作好的临时装片,在镜下已经找到观察物,若看到的物像较为模糊应调
(5)在观察洋葱表皮细胞时,若观察的细胞位于视野左上方,应向
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