___________
[A] signs
[B] stimuli
[C] messages
[D] impulses
文中（ 4 ）处正确的答案是（ ）。A．bitsB．frequenciesC．packetsD．messages
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EIGRP is being used as the routing protocol on the PassGuide network. Whiletroubleshooting some network connectivity issues，you notice a large number of EIGRP SIA（StuckinActive）messages. What causes these SIA routes（）A.The neighboring router stops receiving ACK packets from this router.B.The neighboring router starts receiving route updates from this router.C.The neighboring router is too busy to answer the query(generally caused by high CPU utilization).D.The neighboring router is having memory problems and cannot allocate the memory to process the query or build the reply packet.
HowmanymessagesdoesinternetKeyExchangeusetonegotiateSAcharacteristicswhenrunninginmainmode?()A.3messagesB.6messagesC.4messagesD.2messagesE.5messages
Signs can carry as many _________ as words.A.questions B.examples C.tears and smiles D.messages
This may be because some people do not have the genes necessary to generate particular smell receptors in the nose.These receptors are the cells which sense smells and send（ ）to the brain.A.signs B.stimuli C.messages D.impulses
His motive in coming was to find out the truth.A:reasons B:arguments C:targets D:stimuli
There seemed to be no motive for the murder.A:reasons B:arguments C:targets D:stimuli
