要查的字 | 音序 | 部首 | 选择解释条 |
摇摇欲坠 | | | ①落,掉下( ) ②往下沉( ) ③系在器物上垂着的东西( ) |
半明半昧 | | | ①糊涂;不明白( ) ②隐藏( ) ③昏暗( ) ④冒犯;冒昧( ) |
沉睡 | | | ①(在水里)往下落( ) ②(程度)深( ) ③分量重( ) ④感觉沉重( ) |
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