名词解释题保护接地(protective earthing)
名词解释题
保护接地(protective earthing)
参考解析
解析:
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相关考题:
清漆给予木制品一个光亮的保护涂层。()A、Varnish gives a clear protective coat to steelwork.B、Primer gives a clear protective coat to woodwork.C、Varnish gives a clear protective coat to woodwork.D、Primer gives a clear protective coat to metalwork.
最基本的保护层是油漆。()A、The principal protective coating is paint.B、The principal protective coating is cement wash.C、The principal protective coating is bitumen.D、The principal protective coating is varnish.
()是指一建筑物接至接地装置的所有互相连接的金属装置,包括防雷装置。A、接地线earth conductorB、共用接地系统common earthing systemC、接地基准点earthing reference point,ERPD、等电位连接
()是指一系统的等电位连接网络与共用接地系统之间唯一的那一连接点。A、接地线earth conductorB、共用接地系统common earthing systemC、接地基准点earthing reference point,ERPD、等电位连接
()是指从引下线断接卡或换线处至接地体的连接导体;或从接地端于、等电位连接带至接地装置的连接导体。A、接地线earth conductorB、共用接地系统common earthing systemC、接地基准点earthing reference point,ERPD、等电位连接
()是指将分开的设备各导电部分用等电位连接带、等电位连接导体或电涌保护器连接起来,以减少雷电流在他们之间产生的电位差。A、接地线earth conductorB、共用接地系统common earthing systemC、接地基准点earthing reference point,ERPD、等电位连接
单选题最基本的保护层是油漆。()AThe principal protective coating is paint.BThe principal protective coating is cement wash.CThe principal protective coating is bitumen.DThe principal protective coating is varnish.
名词解释题系统接地(system earthing)