试判断如图BG4-4所示电路为哪种运算放大器电路。
When NIC teaming is used ,how are loops avoided in a virtual switch?（） By using active / passive teaming with spanning tree on the active link。 By using active / passive teaming with only the active link in use。 By using active / active teaming with VM utilizing both uplink port。
（）is an opening for supplying seawater to condensers, pumps,etclocated in the hull below the waterline and having means for the attachment of associated piping. SEA CHEST。 SCUPPER。 SCUTTLE。 SEA PORT。
In which two locations can Nexus 1000v VSM be deployed?（） Control Plane Virtual Appliance。 Control Plane Physical Appliance。 Control Plane Virtual ESX Switch。 Control Plane Physical ESX Switch。
Which statement is most correct regarding vNICs and VLANs?（） only the default vlan has traffic that is tagged。 All vNICs have to be associated with one or more VLANs except for the default vlan。 vlan must be configured before configuring them into a vNIC。 Tagging is done by the operating system NIC if the flag is set to tag traffic。
泥水式顶管机主要包括主机、后顶装置、泥水平衡系统、泥水处理系统和电气控制系统，下列描述不正确的是（）
