根据GB13271-2001《锅炉大气污染物排放标准》，燃轻柴油锅炉烟尘在二、三类区最高允许排放浓度为（）。
A. 50mg/m3
B. 80mg/m3
C. 100mg/m3
D. 150mg/m3
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信息系统的维度包括管理、组织和信息技术。
A. 正确
B. 错误
毛泽东思想的政治民主化理论的主要内容有（）。
A. 提出了民主集中制的组织原则
B. 民主既是手段，又是目的，是手段和目的的统一
C. 人民民主专政是无产阶级专政的一种形式
D. 正确处理人民内部矛盾的方法是民主的方法党内民主是国家政治生活民主化的关键
Which best describes the customer benefit of developing business requirements in the prepare phase？（）
A. reduce unnecessary disruption， delays， rework， and other problems by establishing test cases for use in verifying that the system meets operational， functional， and interface requirements
B. improve its ability to make sound financial decisions by developing a business case based on its business requirements and establishing a basis for developing a technology strategy
C. reduce operating costs and limit change-related incidents by providing a consistent and efficient set of processes
D. improve the return on investment and hasten migration by identifying and planning for necessary infrastructure changes and resource additions， as well as reduce deployment costs by analyzing gaps early in the planning process to determine what is needed to support the system
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