在系统概要设计时，网络设备选择时具体要考虑哪几方面的因素？
You have amulti-area OSPF network and you’re concerned because one of the sites is having connectivity problem to resources in a different area. Which IOS privileged mode command would you enter to confirm that your network ：A.has a path to itsABR，B.has a path to itsASBR，and C.the SPF calculation is functional（） ["show ip protocols","show running-config","show ip ospfneighbor","show ip ospfborder-router"]
某服饰生产企业本月消耗各项费用如下；直接材料60000元，直接人工25000元，变动制造费用为15000元，固定性制造费用为2000元，变动销售管理费用为900元，固定销售管理费用为500元。月初无存货，本月产量为1000件，销量为800件，单位销价为160元／件。 要求：分别按变动成本法和完全成本法计算下列指标； （l）单位产品成本， （2）月末存货成本， （3）本月销货成本， （4）营业利润。
Which two statements are true about voice ports on a router？ （） [" Calls to the PSTN can be made via the use of FXO or T1\/E1 trunk ports."," Calls to the PSTN can be made via FXS or T1\/E1 trunk ports."," Analog and IP phones can be connected to the VoIP network via FXO or T1\/E1 trunk ports."," Calls between analog phones that are attached to the FXS ports in a VoIP network can be completely processed by voice-enabled routers."]
热继电器在电路中具有（）保护作用。 ["过载","短路","失压"]
指出下列句子中通假字并说明意义。邹忌脩八尺有余。
