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问题 单项选择题

原发性肝癌的早期诊断，最重要的诊断依据是（）

A.黄疸

B.核素扫描

C.AFP动态观察

D.A型超声波

E.肝区疼痛

答案

参考答案：C

解析：AFP是肝癌特异性最强的标记物和诊断肝癌的主要指标，适用于人群普查与早期诊断。

多项选择题

安全教育的种类包括( )。

A．转岗教育

B．三级安全教育

C．特种作业人员安全教育

D．经常性安全教育
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单项选择题

The analysis phase answers the questions of who will use the system，what the system will do，and where and when it will be used．During this phase，the project team investigates any current system，identifies (71) ，and develops a concept for the new system．This phase has three steps：first， (72) is developed to guide the project team’s efforts．It usually includes an analysis of the current system and its problems，and the ways to design a new system．The next step is (73) ．The analysis of this information-in conjunction with input from the project sponsor and many other people-leads to the development of a concept for a new system．The system concept is then used as a basis to develop a set of business analysis models that describes how the business will operate if the new system were developed．The set of models typically includes models that represent the (74) necessary to suppor the underlying business process．Last，the analyses，system concepts，and models are combinedin to a document called the (75) ，which is presented to the project sponsor and other key decision makers that decide whether the project should continue to move forward．

A．data and processes
B．system infrastructures
C．external agents
D．system software
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