保险费
铁、铜等矿物属下述自然资源中的()。 ["永可更新的资源","可更新的资源","不可更新的资源","难更新的资源"]
主要承受径向载荷的轴承称为()
Which of the following be stdescribes the following command:ipflow-export destination 192.168.1.501500() ["it is not a valid NetFlow command.","it is an SNMP command tha texports1500-byte packets to IPaddress192.168.1.50.","it is a NetFlov\/command that v\/ill export 1500-byte packets to IP address192.168.1.50.","it is a NetFlov\/command that allows IP address192.168.1.50 to send traffic to port 1500.","It is a NetFlov\/command that v\/ill specify that the NetFlov\/collector’s IP address is 192.168.1.50 over UDP port 1500"]
通常不用作合成纤维原料的是()。 ["聚酸树脂","聚苯乙烯树脂","聚酰胺树脂","聚丙烯腈树脂"]
修辞的创新,基实就是开发()的语言表达方形式。