根据《建筑安装工程费用项目组成》（建标［2013］44号），施工机械在现场进行安装与拆卸所需的人工、材料、机械和试运转费用以及机械辅助设施的折旧、搭设、拆除等费用属于（）。 ["A.施工机具使用费 ","B.施工机械使用费 ","C.安拆费及场外运费 ","D.措施项目费"]
The wlan controller maintains up to how many controller crash files？（） ["10","5","15","20"]
人工冻结法施工工艺不包括（） ["冻结工作站安装","铺设冻结管","积极冻结期","土体渗漏治理"]
What are two design considerations for a WLAN to support voice?（） ["Packet loss is less than one percent.","Signal strength at cell edge is approximately -67 dBm.","End-to-end delay is less than 200 ms.","Cell overlap between APs is 50 percent."]
《生产安全事故报告和调查处理条例》（国务院第493号）规定：自事故发生之日起（）日内，事故造成的伤亡人数发生变化的，应当及时补报。道路交通事故、火灾事故自发生之日起（）日内，事故造成的伤亡人数发生变化的，应当及时补报。 ["30，10","30，14","30，7"]
晶体
