临时接地线有何作用：装拆时应注意哪些事项？
（）是指审计报告中含有的一个段落，该段落提及未在财务报表中列报或披露的事项，根据CPA的职业判断，该事项与财务报表使用者理解审计工作、CPA的责任或审计报告相关。 ["强调事项段","其他事项段","审计意见","审计报告"]
Which two are characteristics of the cost-containment business challenge?（） [" reducing security breaches"," using the Internet more"," reducing upgrade charges"," adopting new applications and service"]
矿山企业的主要负责人每月带班下井不得少于（）个。 ["4","3","5"]
Which four are components of the Cisco collaboration Architecture strategy?（） ["video","intercompany communications","covergence protocols","dedicated networking","clod computing","enterprise social networking","interoperability"]
简述西洋参的功效与作用。
