A:most
B:mostly
C:almost
D:nearly
已知双曲线x29-y2m=1的一个焦点在圆x2+y2-4x-5=0上,则双曲线的渐近线方程为
—Who can tell us how to work out the problem?
—_______. It's too difficult.
某同学要测量一均匀新材料制成的圆柱体的电阻率ρ.步骤如下: