蝼蛄的前足为（）。 ["步行足","跳跃足","开掘足","捕捉足"]
具象插图包括（） ["手绘插图","摄影插图","计算机插图","漫画插图"]
汇款通知书上应注明的信息有（）。 ["客户姓名","销售发票号码","销售金额","销售单位开户银行账号"]
在技能的形成条件中，练习必须有计划有步骤地进行，是技能形成的（）。 ["主要条件","次要条件","外因条件","主要阶段"]
A network is deployed using best practices of the enterprise campus network model， including users with desktop computers connected via IP phones. Given that all components are QoS-capable， where are the two optimal locations for trust boundaries to be configured by the network administrator？（） ["host","IP phone","access layer switch","distribution layer switch","core layer switch"]
虚拟主机的优点。
