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简述食物中毒的概念。

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T触发器的输出状态是在CP脉冲的（）到来时改变。

A. 上升沿
B. 下降沿
C. 高电平
D. 低电平

You are developing a Web application. The Web application restricts access to an administrative page. The Web application uses the following code segment to protect the page.If Page.User.Identity.Name <> "CONTOSO\Administrator" Then Response.Redirect("login.aspx")End IfYou are logged on as Administrator. When you display the page, you are redirected to Login.aspx. You discover that the User.Identity.Name property is not being correctly populated. You need to ensure that you can access the page when you are logged on as Administrator. Which two actions should you perform? （）

A. In the Web.config file, enable impersonation.
B. In IIS, enable anonymous access.
C. In IIS, disable anonymous access.
D. In the Web.config file, set the authentication mode to Windows.

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需要进行道路工程隐蔽工程项目检查验收的是（）。

A. 路基
B. 路床
C. 钢筋
D. 沥青面层

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一般规定：带皮猪肉在冻结过程中的自然损耗标准为（）%。

A. 0.9
B. 1.1
C. 1.3
D. 1.5

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