在电场中，将单位正电荷由低电位移向高电位时（）所做的功称为电动势。
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Under what circumstances should an administrator prefer local VLANs over end-to-end VLANs？（）
A. Eighty percent of traffic on the network is destined for Internet sites.
B. There are common sets of traffic filtering requirements for workgroups located in multiple buildings.
C. Eighty percent of a workgroup’s traffic is to the workgroup’s own local server.
D. Users are grouped into VLANs independent of physical location.
E. None of the other alternatives apply
不得安排女职工从事高处、低温、冷水作业o（）
A. 正确
B. 错误
TICV124的气动执行器维修中应重点检查哪几个部位？
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