A.把天竺葵放在暗处一昼夜,目的是运走、耗尽叶片内的淀粉 |
B.天竺葵在光照下既能进行光合作用又能进行呼吸作用 |
C.将叶片放在酒精中隔水加热的原因之一是避免酒精温度过高引起燃烧 |
D.叶片经脱落、清洗、滴加碘液、再清洗、遮光部分显蓝色 |
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