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(1)将该装置置于黑喑中,打开阀门F1与F2 , 开启吸气泵置换掉玻璃盒内原有气体后,同时关闭F1、F2和吸气泵.10小时后,再次同时打开F1、F2和吸气泵,观察瓶中澄清石灰水发生的变化是:
(2)若先将该盆植物体置于黑暗中一昼夜,再按图示设置,先开启F1、F2和吸气泵,待玻璃盒内原有气体置换后,将该装置置于阳光下照射3﹣4小时(F1、F2和吸气泵始终保持开启状态).然后取叶片A、B分別经脱色、漂洗、滴加碘液、冲洗后观察叶片颜色变化,其中呈现蓝色的叶片是
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同类型试题
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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
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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
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