外部不经济的存在是导致市场秩序混乱的一个重要原因，消除外部不经济性的方法很多，其中最

男性，42岁，间断头痛半年多，有时呕吐，伴双眼视力下降，查体发现双眼视 * * 边缘模糊，隆起且有散在出血点，余（-）。

影像检查未发现异常时，如腰穿CSF化验正常，而颅压为400mmH20，应诊断为（）

A.良性高颅压

B.脑膜炎

C.脑血管痉挛

D.梗阻性脑积水

E.脑水肿

— Can I pay the bill by check?

— Sorry, sir. According to the rules of our hotel, the payment ______ be made in cash.

A．shall

B．need

C．will

D．can

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．completing

B．competing

C．connecting

D．contained

同步电动机可控硅励磁回路中，安装在整流变压器一次侧的空气自动开关的热脱扣器，其动作电流应满足强励电流（）s不脱扣

A.4

B.5

C.8

D.10

混凝土冬期施工时混凝土的振捣采用( )。

A．人工振捣

B．机械振捣

C．均可

D．均不可