Which two OSPF LSA types are new in OSPF version 3？ （） ["Link","NSSA external","Network link","Intra-area prefix","AS domai"]
所谓冷藏肉，其保存温度（）。 ["-18℃以下","-2℃～5℃","10℃～15℃","25℃以上"]
地震波的速度与介质孔隙度有什么关系？
污染物可诱导酶活性的原因是什么？
What are the two parallel SCSI specifications？（） [" Up to 25 m bus length"," Only one device per SCSI bus"," Up to 16 devices per SCSI bus"," Half-duplex operation"," Full-duplex operatio"]
简述动火作业的定义。
