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工作作岗位设计方法研究中使研究人员易于发现问题的是()

A. 程序分析
B. 流程图
C. 线图
D. 作业程序图

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工程所用的管材、管道附件、构(配)件和主要原材料等产品进入施工现场时必须进行进场验收并妥善保管。进场验收时应检查每批产品的订购合同、质量合格证书、性能检验报告、使用说明书、进口产品的商检报告及证书等，并按国家有关规定进行复检，验收合格后方可使用。()

【原文】
I&39;m very happy to talk to you about how the City of Toronto endeavors to turn itself into agreen city in the process of economic integration with its surrounding cities. Toronto is amature municipality and has limited greenfield development potential.
The Greater Toronto Area has one of the most diversified economies. The largest economicsectors include aerospace, biomedical industry, food processing industry and business services.
Due to the urbanization, they have spanned across municipal boundaries. Therefore, measuresare taken to allow high value added business operations to locate within the City.
Traditional heavy manufacturing operations are relocated in the surrounding areas, where therealty taxes are lower and there is a plenty of available land for greenfield development.

不同的洞口应分别采用什么防护措施？

安全生产目标管理的基本内容是什么？