A company is installing IP phones. The phones and office computers connect to the same device. To ensure maximum throughput for the phone data, the company needs to make sure that the phone traffic is on a different network from that of the office computer data traffic. What is the best network device to which to directly connect the phones and computers, and what technology should be implemented on this device? (Choose two.)（） 正确。 错误。
辛普森式行星齿轮机构为一种具有（）等几个独立元件的行星齿轮机构。 正确。 错误。
烧结对抽风机有哪些要求？ 正确。 错误。
A switch has been configured with two vlans and is connected to a router with a trunk for inter-vlan routing.OSPF has been configured on the router，as the routing protocol for the network.Which statement about thisnetwork is true？（） 正确。 错误。
勘察、设计的质量不符合要求或者未按照期限提交勘察、设计文件拖延工期，造成发包人损失的，（）。 正确。 错误。
坚持服从大局，必须正确处理长远利益关系。
