不属于预防医学的道德要求的是（）。

A.爱岗敬业，宣传大卫生法规，言传身教

B.改善工作和学习环境，严把防疫和食品卫生规

C.严格监管，控制污染，保护生态环境，促进社会文明，科学严谨，实事求是，信息透明公开

D.防疫工作者有权在疫区切断传染病传播途径的各种措施

E.提高社区服务水平，保障妇女儿童和老年 * * 益

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 （），and develops a concept for the new system．This phase has three steps：first，（） 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 （）．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 （） necessary to suppor the underlying business process．Last，the analyses，system concepts，and models are combinedin to a document called the （），which is presented to the project sponsor and other key decision makers that decide whether the project should continue to move forward．

During this phase，the project team investigates any current system，identifies （），and develops a concept for the new system．

A．improvement opportunities

B．logical model

C．system requirements

D．system architecture