一个几何体的三视图如图所示,则此几何体是:
A:圆锥
B:棱柱
C:圆柱
D:圆台
The computer company just released an ____ (更新) version last week, and it'll be used in over 50 local classrooms this coming school year.
创制“炮烙”等严刑来残酷镇压人民的暴君是( )
如图图例中表示运河的是( )