简述教育法的涵义
当电接点压力表轻敲位移超差时，可（） ["适当地调正触头游丝","清洗触头","修复机芯","以上三项"]
博德的事故因果连锁包括的因素有（） ["管理失误","不安全行为","事故","伤亡","不安全状态"]
Which three statements about firewall modes are correct？ （） [" A firewall in routed mode has one IP address"," A firewall in transparent mode has one IP address"," In routed mode， the firewall is considered to be a Layer 2 dew"," In routed mode， the firewall is considered to be a Layer 3 device"," In transparent mode， the firewall is considered to be a Layer 2 device"," In transparent mode， the firewall is considered to be a Layer 3 device"]
操作模仿。
地层划分
