A.蕨类植物植株矮小,没有根、茎、叶等器官的分化 |
B.油松种子是裸露着的,外面没有果皮包被,所以油松属于裸子植物 |
C.蜥蜴的生殖和发育摆脱了对水环境的依赖,是真正的陆生脊椎动物 |
D.鸟和哺乳动物的体温恒定增强了动物对环境的适应能力,扩大了动物的分布范围 |
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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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