芒果视频下载

防(fang)盜(dao)鎖的國(guo)家(jia)(jia)標(biao)準分為(wei)分“普通防(fang)護級(ji)別(bie)”和“高級(ji)防(fang)護級(ji)別(bie)”，前者用字母“A”表示，后者用字母“B”表示。市(shi)面上(shang)的所謂超(chao)B級(ji)和C級(ji)鎖是一(yi)些(xie)商家(jia)(jia)自己定(ding)義(yi)的，嚴格來說應該算作(zuo)B級(ji)鎖。

A級鎖(suo)(suo)芯(xin)(xin)是(shi)老式(shi)的(de)鎖(suo)(suo)芯(xin)(xin)，鑰(yao)(yao)匙(chi)(chi)(chi)(chi)(chi)(chi)是(shi)十字(zi)平(ping)(ping)板型(xing)(xing)(xing)(xing)或(huo)月牙型(xing)(xing)(xing)(xing)有凸形(xing)(xing)匙(chi)(chi)(chi)(chi)(chi)(chi)槽(cao)鑰(yao)(yao)匙(chi)(chi)(chi)(chi)(chi)(chi)，單(dan)面(mian)或(huo)雙(shuang)面(mian)有一(yi)排凹(ao)(ao)形(xing)(xing)匙(chi)(chi)(chi)(chi)(chi)(chi)槽(cao)，這類鑰(yao)(yao)匙(chi)(chi)(chi)(chi)(chi)(chi)小偷(tou)用(yong)錫紙可(ke)以在(zai)(zai)幾秒(miao)鐘之內(nei)就可(ke)以打開(kai)，如果你家還是(shi)用(yong)的(de)這種鑰(yao)(yao)匙(chi)(chi)(chi)(chi)(chi)(chi)趕緊換了。A級鎖(suo)(suo)芯(xin)(xin)已經(jing)無(wu)法防住小偷(tou)了。B級鎖(suo)(suo)芯(xin)(xin)，防止技(ji)術開(kai)鎖(suo)(suo)時(shi)間(jian)(jian)不少(shao)于5分(fen)鐘，防止沖(chong)擊開(kai)啟時(shi)間(jian)(jian)不少(shao)于30分(fen)鐘。B級鎖(suo)(suo)芯(xin)(xin)鑰(yao)(yao)匙(chi)(chi)(chi)(chi)(chi)(chi)為(wei)平(ping)(ping)板型(xing)(xing)(xing)(xing)或(huo)月牙型(xing)(xing)(xing)(xing)，B級鎖(suo)(suo)鑰(yao)(yao)匙(chi)(chi)(chi)(chi)(chi)(chi)比(bi)A級鑰(yao)(yao)匙(chi)(chi)(chi)(chi)(chi)(chi)要復雜(za)，鑰(yao)(yao)匙(chi)(chi)(chi)(chi)(chi)(chi)槽(cao)為(wei)單(dan)面(mian)或(huo)雙(shuang)面(mian)有兩排凹(ao)(ao)形(xing)(xing)或(huo)圓柱型(xing)(xing)(xing)(xing)多點(dian)凹(ao)(ao)形(xing)(xing)匙(chi)(chi)(chi)(chi)(chi)(chi)洞(dong)；超(chao)B級鎖(suo)(suo)芯(xin)(xin)鑰(yao)(yao)匙(chi)(chi)(chi)(chi)(chi)(chi)為(wei)平(ping)(ping)板型(xing)(xing)(xing)(xing)，匙(chi)(chi)(chi)(chi)(chi)(chi)槽(cao)為(wei)單(dan)面(mian)或(huo)者(zhe)雙(shuang)面(mian)有兩排凹(ao)(ao)形(xing)(xing)加S形(xing)(xing)，或(huo)內(nei)外雙(shuang)蛇型(xing)(xing)(xing)(xing)內(nei)銑槽(cao)結構。是(shi)最復雜(za)的(de)鎖(suo)(suo)芯(xin)(xin)，也是(shi)最安全的(de)鎖(suo)(suo)芯(xin)(xin)，工具開(kai)啟時(shi)間(jian)(jian)在(zai)(zai)270分(fen)鐘以上甚(shen)至無(wu)法開(kai)啟。