以下关于预制阳台混凝土浇筑说法正确的是（）。 ["A.预制阳台混凝土浇筑前，应将预制阳台表面清理干净 ","B.预制阳台混凝土浇筑时，混凝土采取从两边向中间浇筑 ","C.预制阳台混凝土浇筑，应连续施工，一次完成 ","D.预制阳台混凝土浇筑9h内应进行覆盖浇水养护 ","E.当日平均气温低于5℃时，应采用薄膜养护"]
A virtual storage area network (VSAN) is a collection of ports from a set of connected Fibre Channel switches, that form a virtual fabric. Which technology allows centralized storage services to be shared across different VSANs?（） ["IVR","FSPF","FICON","SANTa"]
简答问题设计的基本要求。
Which two of these are characteristics of Metro Ethernet？（） [" class of service"," bandwidth profiles"," user-network interface"," Ethernet LAN circuit attributes"," Ethernet virtual circuit attribute"]
流行性感冒的确诊办法（） ["发病季节","呼吸道症状轻微而全身中毒症状重","病毒分离","血凝抑制试验"]
细碧角斑岩型块状硫化物矿床
