如要将一个最大幅度为9.99V的模拟信号转换为数字信号,要求ADC的分辨率小于10mV,最少应选用()位ADC。
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变速器低速档有异响,但高速时声响减弱或消失,在空挡滑行中,听到“哗、哗”声,则表明()后轴承松旷或损坏。
焊机的电缆线应使用整根导线,中间不应有连接接头。当工作需要接长导线时,应使用接头连接器牢固连接,连接处应保持绝缘良好。()
A. 正确
B. 错误
You are creating an ASP.NET web application that hosts several Windows Communication Foundation (WCF) services. The services have ASP.NET Compatibility Mode enabled. Users authenticate with the Web application by using a cookie-based ASP.NET Forms Authentication model. You add a service file named Authentication.svc that contains the following code segment: Factory="System.Web.ApplicationServices.ApplicationServicesHostFactory" %> You need to ensure that users can access the WCF services without having to re-authenticate. Which two configuration settings should you add? (Each is part of a complete solution. Choose two.)()
A. In the system web. Extensions scripting/webServices/authenticationService element, set the enabled attribute to true.
B. In the system web. Extensions scripting/webServices/profileService element, set the enabled attribute to true.
C. Add a service endpoint with basicHttpBinding for the contract System.Web.ApplicationServices.AuthenticationService.
D. Add a custom service behavior named AuthenticationService Type Behaviors with a service AuthenticationManager element that has service AuthenticationManagerType set to System.Web.Security.SQL Membership Provider