A.1千克莲雾19.3元,买27.7千克要花多少钱? |
B.一辆小车的速度是27.7千米/时,19.3小时行多少千米? |
C.一条蓝鲸的体长是27.7米,大约是江豚体长的19.3倍,江豚体长是多少? |
D.课后延时服务的餐盒大约长27.7厘米,宽19.3厘米,它的占地面积是多少? |
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