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下列不属于股票一般特征的是（） 风险性。 可偿还性。 流通性。 参与性。
以下苏联（俄）领导人的言论或主张出现的先后顺序是（）。 ①玉米能够使农庄像插了翅膀一样飞腾起来 ②全部政权归苏维埃 ③延缓速度就是落后 ④人道的、民主的社会主义 ②①③④。 ②③①④。 ①②③④。 ②③④①。
Refer to the exhibit. All network links are FastEthernet. Although there is complete connectivitythroughout the network， Front Line users have been complaining that they experience slowernetwork performance when accessing the server farm than the Reception office experiences.Based on the exhibit， which two statements are true？（） Disabling the Spanning Tree Protocol would improve network performance。 Changing the bridge priority of S1 to 36864 would improve network performance。 Changing the bridge priority of S1 to 4096 would improve network performance。 Changing the bridge priority of S3 to 4096 would improve network performance。 Upgrading the link between S2 and S3 to Gigabit Ethernet would improve performance。 Changing the bridge priority of S2 to 36864 would improve network performance。
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You are building a client for a Windows Communication Foundation (WCF) service. You need to create a proxy to consume this service. Which class should you use?（）
