概念
What Cisco IOS feature examines packets received to make sure that the source address and interfaceare in the routing table and matck the interface that the packet was received on?() ["MPLS Traffic Engineering","Dynamic access-lists","Authentication","Receive ACL","Unicast RPF"]
基因工程药物主要有哪几类?试举例说明。
平面广告是一种()广告形式。 ["二度空间","时间的","三度空间","空间的"]
Which two statements about the DiffServ model are true?() ["a class can be identified as a single application, multiple applications with similar service needs,or be based on the source or destination IP address","a drawback of the DiffServ field in the MAC header to mark frames into behavior aggregates (BAs)","DiffServ uses the DiffServ field in the MAC header to mark frames into behavior","the DiffServ field occupies the same eight bits of the MAC header that were previously used for the ToS field","the first six high-order bits of the DiffServ field are used to identify the Resource Reservation Protocol (RSVP) value","the primary goal of DiffServ is scalability"]
材料:美国股市在经历了战后最大的牛市后,于2000年开始转入下跌,2003年已是边疆下跌的第三个年头。于是有人认为,20世纪90年代末期,美联储应更早一些提高利率,那样就不会发生后来的股市狂跌情况,或至少其程度不会那么严重。实际上,各国中央银行官员中就注意到资产价格上涨问题,认识到资产价格上涨能拉致力消费进一步膨胀,并引发通胀,但绝大部分央行官员却认为,中央银行不应直接刺破泡沫。对此,美联储主席格林斯潘做了较为全面的诠释:首先,不能单凭资产价格上涨就断定经济出现泡沫;其次,利率象一口钝刀,升幅太小可能不会有任何作用,升幅过大又会导致经济衰退。格林斯潘认为,最好的办法是让泡沫自行破灭,然后再利用货币政策消除负面影响。请仔细阅读材料,然后回答下列问题:材料中反应了一种观点,即认为中央银行不应直接刺破资产价格中的泡沫,试说明支持这种观点的理由何在?