温度设置 | 5℃ | 10℃ | 15℃ | 20℃ | 25℃ | 30℃ |
光照12小时C02的减少量(mg) | 12 | 21 | 30 | 39 | 45 | 42 |
黑暗12小时C02的增加量(mg) | 6 | 9 | 12 | 18 | 27 | 36 |
A.光照12小时后,25℃组植物光合作用共消耗45mgC02 |
B.光照12小时后,30℃组植物积累有机物最多 |
C.24小时后,10℃组密闭环境中C02减少30mg |
D.24小时后,20℃组植物积累有机物最多 |
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