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（）的科学文艺创作有三方面的特色：即内容广博具有精确的科学性、思想深刻，富于教育意义、手法多样，语言浅近，晓畅。

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Word编辑窗口的光标有（）和鼠标光标。

A. 编辑光标
B. 插入光标
C. 删除光标
D. 追加光标

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在任何情况下，只能有一个图层处于当前模式。

A. 正确
B. 错误

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电话闭塞法不能使用时，实行（）。

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You are creating a Windows Communication Foundation (WCF) service that accepts claims-based tokens. You need to ensure that the service can use claims from trading partners even though there are variations on naming for the same elements.Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)（）

A. Register a custom Service Authorization Manager that implements Check Access. In this method, use System.Convert.ChangeType to transform the incoming claim set to a WindowsClaimSet type.
B. Apply a PrincipalPermission attribute on the operation with the required claims listed in the Roles property.
C. Within the operation, verify the presence of the required claims in the current AuthorizationContext.
D. Register an AuthorizationPolicy that maps external claims to an internal ClaimSet.

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