凡在离地面（）以上的地点作业，均视为高空作业。 3m。 1m。 1.5m。 4m。
一旦在WINS服务器的数据库中建立了非WINS客户机的（）后，WINS客户机就可以从中查询到这些非WINS客户机的IP地址并且实现与之通信了。 正向查询记录。 反向查询记录。 主机记录。 静态映射记录。
When you enable port security on an interface that is also configured with a voice VLAN， what is the maximum number of secure MAC addresses that should be set on the port？（） No more than one secure MAC address should be set.。 The default will be set.。 The IP phone should use a dedicated port， therefore only one MAC address is needed per port.。 No value is needed if the switchport priority extend command is configured. 。 No more than two secure MAC addresses should be set.。
如果承包人要求延期开工，应当由（）批准。 发包人。 工程师。 承包人代表。 建设行政主管部门。
Refer to the exhibit. Which statement about dynamic routing protocols for this network is true? （） No dynamic interior routing protocol can summarize as shown。 Unless configured otherwise, EIGRP would automatically summa rize the prefixes as shown in the exhibit。 With this IP addressing scheme, EIGRP can be manually configured to summarize prefixes at the specified summarization points。 The IP address design lends itself to OSPF Each summarizing router would be an ABR, summarizing to the next area in the address hierarchy。
通过对版面中的构成元素的合理排列来引导读者的视线向一个方向，从而串联起版面形成一个有机的整体，称为（）
