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问题 多项选择题

根据债券的利率与市场利率的关系，债券可以分为固定利率债券与浮动利率债券，其中(　　)是固定利率债券。

A．单利债券

B．复利债券

C．浮动利率债券

D．可变利率债券

答案

参考答案：A,B

填空题

①（-7x+2y）（-7x-2y）=______；②（2x-3y）2=______．
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单项选择题

Today’s response to the data access dilemma eschews the traditional archival approach in favor of emerging standards for what are described as the documents of the future: compound documents. Product users and developers hope the latest standards effort--such as OpenDoc and Microsoft Corp.’s Object Linking and Embedding (OLE) will (26) data accessibility.
OpenDoc is a standards group (27) a common look and feel throughout documents, even though different applications are used.
OLE technologies allow Microsoft to (28) its various software products. Microsoft creates, governs and distributes the OLE capability, which is what most (29) it from the open OpenDoc approach. Thus, users can assemble (30) of varying application to create compound documents. With OLE users can, for example, embed an Excel chart in a Microsoft word report.

A．connect

B．link

C．concatenate

D．contact
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