单项选择题

某在建体育场工程，准备进行跨度40m的钢结构屋顶安装，施工单位编制了钢结构安装工程专项施工方案，组织了专家论证。下列做法中，正确的是（）。

A.施工单位组织了5名以上具有中级技术职称、专业经验丰富的专家进行论证
B.专家论证结论为“修改后通过”的，施工单位按照专家意见修改后实施
C.专家论证结论为“通过”的，施工单位参考专家意见自行修改完善后实施
D.专家论证的内容包括计算书、验算依据，是否符合规范标准，是否造价合理

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听力原文：I'd like to turn our attention to a petition involving an important issue that affects a lot of us herE.Univex Systems has created a petition in support of the roadway improvements that Mayor Simmons has recently proposed for the Olivia Street corridor —the road that ninety-five percent of us take to get here every day. The roadwork that's currently under debate will consist of adding additional lanes from Route sixteen-oh-four to Highway eighty-one, and will add left- and right-turn lanes at each major and minor intersection along Olivia Street between Route sixteen-oh-four and Highway eighty-onE.Finally, they'll also add two bus stops and a bike path. Most of you will probably agree that these are much needed improvements and I hope you will sign the petition. It will be located on top of the file cabinet behind Jerry Nunez's desk in the Operations Building on the first floor. It will be available Tuesday, September fifth through Friday, September fifteenth.Why does the speaker want employees to support the project?A.Because Olivia Street is a dangerous roaD.B.Because the company is moving to Route 1604.C.Because the company is paying for part of it.D.Because the construction will improve their commutE.

A.Why
B.Because
C.
B.Because
D.
C.Because
E.
D.Because

单项选择题

某住宅小区工程、基坑开挖深度10m，采用预应力锚杆组合支护结构，在雨季施工阶段，基坑坍塌事故风险增大。下列保证基坑安全的做法中，错误的是（）。

A.雨季施工期间，在坑顶、坑底采取有效的截排水措施
B.发生暴雨、台风等灾害天气后，及时对基坑安全进行现场检查
C.基坑周边原有建筑物设置监测点，安排专人负责监测
D.基坑支护结构构件强度达到设计要求的70%，开挖下层土方

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