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大庆2012年中级会计师考试考试科目？大庆2012年中级会计师考试考试科目？

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垄断竞争型市场是指既有垄断又有竞争的市场结构。在垄断竞争型市场上，每个企业都在市场垄断竞争型市场是指既有垄断又有竞争的市场结构。在垄断竞争型市场上，每个企业都在市场上具有一定的垄断力，但它们之间又存在激烈的竞争。其特点是（）。

从市场类型来看，市场竞争的激烈程度取决于市场属于完全竞争、垄断竞争、寡头垄断和完全垄断中的从市场类型来看，市场竞争的激烈程度取决于市场属于完全竞争、垄断竞争、寡头垄断和完全垄断中的哪一种类型。（）

From the import’s point of view, the ideal arrangement is to draw a sight draft under a documentary credit, and to receive payment of it immediately upon presentation.（）

To ensure security of electronic commerce,an electronic certification center should be established.DTo ensure security of electronic commerce,an electronic certification center should be established.Digital ID is trusted to validate identity.Digital ID is trusted to a third party,namely,an authorized agency,to release,including identifying information of the holder（）,an inscriptive key for common use by the both parties,period of validity,password and identification information of the authorized agency,etc.Wjth digital ID,both parties in transactions can be assured of identifying the other party and validate that the information sent out from the other party has not been subject to alteration.