多项选择题

以下对信息熵的描述正确的是()
A、信源输出后,每个消息所提供的平均信息量
B、信源输出前,信源的平均不确定性
C、信源的随机性
D、信源的价值

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预算执行中的超预算支出，财政部门或主管预算单位可以追加财政预算拨款和财政专户拨款。

A．错误
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多项选择题

Objectives of International Organization of Securities Commissions (IOSCO) member agencies include ( ). A.
to cooperate together to promote high standards of regulation in order to maintain just, efficient, and sound markets B.
to exchange information on their respective experiences in order to promote the development of domestic markets C.
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单项选择题

注册会计师确定固定资产减值准备的披露是否恰当时，应当关注企业在财务报表附注中披露固定资产减值准备的转回情况。
A、正确
B、错误

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