A.“空山新雨后,天气晚来秋”雷雨后空气清新的原因与到的转化有关,二者均为单质且为非极性分子 |
B.“爆竹声中一岁除,春风送暖入屠苏”该过程发生反应: |
C.“火树银花合,星桥铁锁开”涉及到发光过程是电子由基态到激发态的跃迁过程 |
D.“独忆飞絮鹅毛下,非复青丝马尾垂”,“飞絮”与“马尾”的主要化学成分是纤维素 |
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