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
Howmanywlanscanaciscoaironet1242inh-reapmodesupportwhenactivelyconnectedtoawirelesscontroller？（）
A. 4
B. 32
C. 8
D. 16
离心泵的扬程可以由液体进泵前与出泵后的压力差表示。（)
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