题目内容

背景资料
某施工单位接受邀请，按照参加投标预备会→进行现场考察→编制投标文件的程序参加了一净直径7.Om、深650m立井井筒的施工招标活动，并中标。
该工程施工中发生了以下事件：|来源：建设工程教育网|
（1）工程进行到第2个月时又新进了一批水泥，施工单位首次组织材料员、工程技术人员对该批水泥进行进场联合验收，合格后用于工程施工。
（2）在现浇钢筋混凝土井壁施工过程中，施工单位按照绑扎钢筋→施工单位自检→浇注混凝土的程序组织施工。
（3）在完成500m井筒工程后，施工单位对其进行全面质量检查，结果如下表所示：
质量因素
不合格次数
断面规格
10
钢筋绑扎
15
混凝土强度
6
井壁厚度
7
井壁外观
12
（4）该井筒工程施工完成后采用的竣工验收程序见下框图：
问题
1．指出投标程序中所存在的问题并予以纠正。
2．指出事件（1）所存在的问题并说明正确做法。
3．指出事件（2）施工程序的不妥之处，并陈述理由。
4．根据事件（3），采用排列图分析方法判断影响工程质量的主要因素、次要因素和一般因素。
5．指出上述竣工验收程序框图中的问题，并画出正确的程序框图。

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