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管线保温层的厚度仅由管线的大小确定。（)

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WhataretwowaysinwhichtheCiscoSecurityMonitoring，Analysis，andResponseSystemprovidessuperiornetworkprotection？（）

A. reportsfinanciallossesfromattacks
B. providessecutiycommandandcontrol
C. providesVPNconnectivitytoclients
D. expeditesreportingofincidents
E. manageroguewirelesssignals

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从防止静电灾害的角度来讲，油品在管道中的流速越低越好。（)

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油品蒸发损耗按照引起油蒸气排出罐外的原因可分为运输损耗、小呼吸损耗、大呼吸损耗。（)

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Anintegrated，convergednetworkenablescustomerstoaccomplishwhichthreeactions？（）

A. simplifycommunications
B. eliminatenetworksecuritythreats
C. reducetotalcostofownership
D. reduceheadcount
E. enablecollaboration
F. increasebandwidth

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