什么是波前？什么是波前面？
Which Ethernet field is used to differentiate between the FCoE frame and the FIP frame？（） [" Ethernet FCS"," Source address"," Destination address"," EtherType"," Protocol type"]
对普通硅酸盐熔体，随温度升高，表面张力将（）。 ["降低","升高","不变","A或B"]
生理功能、体能和心理条件是体质的（） ["物质基础","主、客观表现","综合反应","组成成分"]
You need to investigate a VTP problem between two Company switches. The lack of which two prevents VTP information from propagating between switches？（） ["A root VTP server","A trunk port","VTP priority","VLAN 1","None of the other alternatives apply"]
按《石油库设计规范》（GB50074-2002）规定，甲、乙、丙A类油品的哪些作业场所应设消除人体静电设施？
