Duringtheinstallationofthegroove,thetotalcross-sectionalareaoftheconductorincludinginsulationinthesamegrooveshallnotexceedtheinnercross-sectionalareaofthegroove.() 在线槽安装过程中，同一线槽内包括绝缘在内的导线截面积总和应该不超过线槽内部截面积的()
A.20% B.40% C.60% D.80%正确答案B
Duringtheinstallationofthegroove,thetotalcross-sectionalareaoftheconductorincludinginsulationinthesamegrooveshallnotexceedtheinnercross-sectionalareaofthegroove.() 在线槽安装过程中，同一线槽内包括绝缘在内的导线截面积总和应该不超过线槽内部截面积的()
A.20% B.40% C.60% D.80%正确答案B
