问题 问答题

某工程项目在施工阶段的监理中,监理工程师对承包商在施工现场制作的水泥预制板进行质量检查,抽查了500块,发现其中存在的问题如表3-1所示。

表3-1 水泥预制板质量检查表


序号 存在问题项目 数量
1 蜂窝麻面 23
2 局部露筋 10
3 强度不足 4
4 横向裂缝 2
5 纵向裂缝 1
合计 40

产品的主要质量问题是什么监理工程师应如何处理

答案

参考答案:产品的主要质量问题是:
(1)数据计算(表3-2)。

表3-2 数据计算表
序号 项目 数量 频率(%) 累计频率(%)
1 蜂窝麻面 23 57.5 57.5
2 局部露筋 10 25.0 82.5
3 强度不足 4 10.0 92.5
4 横向裂缝 2 5.0 97.5
5 纵向裂缝 1 2.5 100
合计 40
(2)绘出排列图,如图3-2所示。
[*]
(3)分析。
通过对图3-2的分析,该项目主要的质量问题是水泥预制板的表面出现蜂窝麻面和局部露筋问题,次要因素是混凝土强度不足,一般因素是横向裂缝和纵向裂缝。
监理工程师应要求承建商提出具体的质量改进方案,分析产生质量问题的原因,制定具体的措施提交监理工程师审查,经监理工程师审查确认后,由施工单位实施改进。执行过程中,监理工程师应严格监控。

选择题
单项选择题

Lying in the sun on a rock, the cougar saw Jeb and his son, Tom, before they saw it. Jeb put his bag down quickly and pulled his jacket open with both hands, making himself look big to the cougar. It worked. The cougar hesitated, ready to attack Jeb, but ready to forget the whole thing, too.
Jeb took off his jacket, grasped Tom and held him across his body, making a cross. Now the cougar’s enemy looked even bigger, and it rose up, ready to move away, but unfortunately Tom got scared and struggled free of Jeb.
"Tom, No !" shouted his father.
But Tom broke and ran and that’s the last thing you do with a cougar. The second Tom broke free, Jeb threw himself on the cougar, just as it jumped from the rock. They hit each other in mid air and both fell. The cougar was on Jeb in a flash, forgetting about Tom, which was what Jeb wanted. Cougars are not as big as most people think and a determined man stands a chance, even just with his fists. As the cougar’s claws got into his left shoulder, Jeb swung his fist at its eyes and hit hard. The animal howled(吼叫) and put its head back. Jeb followed up with his other fist. Then out of the corner of his eye, Jeb saw Tom. The boy was running back to help his father.
"Knife, Tom," shouted Jeb.
The boy ran to his father’s bag, while Jeb started shouting as well as hitting, to keep the cougar’s attention away from Tom. Tom got the knife and ran over to Jeb. The cougar was moving its head in and out, trying to find a way through the wall. Jeb was making out of his arms. Tom swung with the knife, into the cougar’s back. It howled horribly and ran off into the mountains.

Which of the following happened first

A.The cougar jumped from the rock.
B.Tom struggled free of his father.
C.Jeb asked Tom to get the knife.
D.Jeb held Tom across his body.