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问题 单项选择题

轴位CT平扫难以确定病变位于幕上或幕下时，用哪一种方法帮助定位（）

A.轴位增强扫描

B.动态增强扫描

C.冠状位增强扫描

D.薄层CT扫描

E.重叠扫描

答案

参考答案：C

解析：对鉴剐病变和小脑幕的关系，冠状位扫描帮助较大。

单项选择题 共用题干题

A requirement is simply a statement of what the system must do or what characteristics it needs to have. Requirements written from the perspective of user and focus on user needs are called (1). Requirements written from the developer's perspective and describe how the system will be implemented are called (2). Requirements evolve from detailed statements of the business capabilities that a system should have to detailed statements of the technical way in wluch the capabilities will be implemented in the new system. Requirements can be either functional or nonfunctional in nature. For example, during the analysis phase of travel vehicles sales system, the system that must have the ability to search for available inventory is (3). The requirement that the system should be able to work on any Web browser belongs to (4). That customer personal information is protected in compliance with the Data Protection Act is a requirement of (5).

空白（2）处应选择（）

A.operationalrequirements

B.businessrequirements

C.technical requirements

D.system requirements
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问答题

施工单位对土方路基工程确定的质量控制关键点中缺少哪些内容？
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