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问题 单项选择题

支原体与细菌的主要不同点在于（）。

A.以二分裂方式繁殖

B.可在人工培养基上生长

C.无细胞壁

D.含DNA和RNA

E.以上都不是

答案

参考答案：C

解析：

支原体是一类缺乏细胞壁，能通过除菌滤器，在无生命培养基上能生长的最小原核细胞型微生物。

单项选择题

Microsoft’s COM is a software （66） that allows applications to be built from binary software components. COM defines a binary standard for function calling between components, a way for components to dynamically discover the interfaces implemented by other components, and a mechanism to identify components and their interfaces uniquely.OLE is a compound （67）standard developed by Microsoft. OLE makes it possible to create （68）with one application and link or embed them in a second application. Embedded objects retain their original format and （69）to the application that created them. Support for OLE is built into the Windows and MacOS Operating Systems. A （70） compound document standard developed mainly by Apple and IBM is called OpenDoc.

A．characteristics

B．address

C．page

D．links
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多项选择题

凯恩斯主义的货币需求函数中，影响货币需求的变量包括( )。

A．物价水平

B．货币供应量

C．预期物价变动率

D．利率水平

E．国民收入水平
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