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想看白刃血纷纷，死节从来岂顾勋。（《燕歌行》）句中“死节”是什么意思？

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根据《政府信息公开条例》的规定，行政机关一般不得公开涉及（）的政府信息。

A. 国家秘密
B. 商业秘密
C. 个人隐私
D. 法律法规

You are developing a Windows Communication Foundation (WCF) service that does not operate on a duplex channel.You find that operations do not start until all previous operations have finished. The service hosting code contains the following lines.var service = new WarehouseService(); var host = new ServiceHost(service);You need to ensure that new operations do not wait for previous operations to finish. Which attribute should you use to decorate the service?（）

A. [ServiceBehavior(InstanceContextMode=InstanceContextMode.Single, ConcurrencyMode=ConcurrencyMode.Multiple)]
B. [CallbackBehavior(ConcurrencyMode=ConcurrencyMode.Multiple)]
C. [ServiceBehavior(InstanceContextMode=InstanceContextMode.Single, ConcurrencyMode=ConcurrencyMode.Single)]
D. [ServiceBehavior(InstanceContextMode=InstanceContextMode.Single, ConcurrencyMode=ConcurrencyMode.Reentrant)]

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发芽法适宜的环境温度是（）

A. 30℃～40℃
B. 40℃～45℃
C. 18℃～25℃
D. 10℃～17℃
E. 20℃～27℃

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宫殿中的鼎式香炉，其作用是（）。

A. 取暖
B. 供佛
C. 供祖宗
D. 一种礼器，用来燃檀香或松枝

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