试述难加工材料的加工特点？
《中华人民共和国教师法》规定，“学校或者其他教育机构应当对教师的（）进行考核。”
电子化政府。
简述侦察兵作用。
In BGP routing， what does the rule of synchronization mean？（） ["A BGP router can only advertise an EBGP learned route， provided that the route is an IGP route in the routing table.","A BGP router can only advertise an IBGP learned route， provided that the route is an IGP route in the routing table.","A BGP router can only advertise an IBGP learned route， provided that the route is an IGP route that is not in the routing table.","A BGP router can only advertise an EBGP learned route， provided that the route is a metric of 0 in the BGP table."]
设计美学是如何产生的？
