在Rt△ABC中,∠C=90°,AB=10.若以点C为圆心,CB为半径的圆恰好经过AB的中点D,则AC=( )
x÷1.6=7, 方程两边同时____就能求出x的值。
属于我国内海的是( )
One of her s____ is her bad temper, which keeps her colleagues away from her.