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设备的光口发光,该端口状态是 UP的。()

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管道的直径越大,长度越长,则其产生的热应力也越大。()

WhatthreeelementsareincludedwithCiscoSmallBusinessProService?()

A. Softwareupgradesandupdates
B. CiscoSMARTnet
C. nextbusinessdayadvancedhardwarereplacement
D. accesstotheCiscoSmallBusinessSupportCenter
E. accesstotheCiscoSmallBusinessUniversity
F. five-yearsubscriptionterms

墙架用于管径较小,管道数量较少,且有可能沿着建筑物墙壁敷设的管道。()

紧固法兰螺丝应根据螺丝的规格及材料,均匀地用力进行紧固。()

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