管道的直径越大,长度越长,则其产生的热应力也越大。()
查看答案
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。()
精密设备要定人管理,定点存放,定期检查,定期维护,若有损坏,及时送修。()