六棱柱有______个顶点,______个面,______条棱.
六棱柱上下两个底面是6边形,侧面是6个长方形.所以共有12个顶点;8个面;18条棱.
故答案为12,8,18.
The sand in the river is increasing these years. We must to protect
the environment.
A.take measures
B.do some work
C.do something
D.make some rules
电气设备发生接地故障时其接地部分(如接地的设备外壳、接地体或接地网)与大地(零)电位之间的电位差称为接地故障时设备的对地电压UE()。