A:﹣x2+(﹣2)2=(x﹣2)(x+2)
B:x2+2x﹣1=(x﹣1)2
C:4x2﹣4x+1=(2x﹣1)2
D:x2﹣4x=x(x+2)(x﹣2)
The match was very fantastic, ______ when White scored at the last moment.
已知某几何体的三视图如图,其中正(主)视图中半圆的半径为1,则该几何体的体积为( )