单项选择题

PLC的工作过程包括：输入采样、程序执行和（）。
A、输出刷新
B、输出反馈
C、输入刷新
D、输入反馈

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单项选择题

You are developing a client application that consumes a Windows Communication Foundation (WCF) servicE.The operation contract is as follows.[OperationContract][FaultContract(typeof(SalesFault))]string GetSales(string saleId);（）The service configuration file contains the following line in the serviceBehaviors section.A divide-by-zero exception is not being handled by the servicE.You need to ensure that the exception is caught in the client application.Which type of exception should the client catch?（）A.TimeoutExceptionB.FaultExceptionC.DivideByZeroExceptionD.FaultException<SalesFault>

A.The
B.[OperationContract][FaultContract(typeof(SalesFault))]string
C.A
D.You
E.Which

单项选择题

设置虚拟机启动优先级，一下说法正确的是()。

A.虚拟机启动优先级的设置作用于DRS
B.虚拟机启动优先级的设置同时作用于HA和DRS
C.虚拟机设置启动优先级为缺省，则取集群中设置的启动优先级
D.虚拟机和集群同时设置启动优先级：虚拟机设置非缺省，则优先取集群中设置的启动优先级

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