(1)制作人的口腔上皮细胞临时装片时,为维持细胞的正常形态,应在载玻片上滴加 .
(2)观察小鱼尾鳍内血液流动的实验中,下列材料用具无需用到的是 .
A.培养皿 |
B.滴管 |
C.显微镜 |
D.盖玻片 |
①向上移动玻
②向下移动玻片
③调节粗准焦螺旋
④调节细准焦螺旋
⑤调节遮光器或反光镜
⑥转动转换器.
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