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【简答题】
某沿海城市电力隧道内径为35m，全长4.9km，覆土厚度大于5m，采用顶管法施工，合同工期1年，检查作工作坑，采用现场制作沉井下沉的施工方案。 电力隧道沿着交通干道走向，距交通干道侧摄近处仅2m左右。离隧道轴线8m左右，有即将入地的高压线，该高压线离地高度最低为15m。单节硷管长2m，自重10t，采用20t龙门吊下管。隧道穿越一个废弃多年的污水井。 上级公司对工地的安全监督检查中，有以下记录： （1）项目部对本工程作了安全风险源分析，认为主要风险为正、负高空作业，地面交通安全和隧道内施工用电，并依此制订了相应的控制措施。 （2）项目部编制了安全专项施工方案，分别为施工临时用电组织设计，沉井下沉施工方案。 （3）项目部制定了安全生产验收制度。 该工程还有哪些安全风险源未被辨识？对此应制订哪些控制措施？
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【单选题】What is Don Juan about?
A.
It is a great comic epic, a poem based on a traditional Spanish legend of a great lover.
B.
It is about a strange adventure at sea of an old sailor who feels compelled to tell the people he meets exactly what has happened to him.
C.
It is a crystal clear and lucid poem, which depicts various images as units in the whole cosmic dance.
D.
It is a beautiful poem which expresses a relationship between imagination and the power of nature through the combination of the wild irregularity of the stanzas with an amazing degree of artistic control.
【单选题】What does Juan Somavia, Director-General of the International Labour Organization say?
A.
Many countries have not taken measures to create enough jobs.
B.
Few countries know how to address the current economic crisis.
C.
Few countries have realised the seriousness of the current crisis.
D.
Many countries need support to improve their people's livelihood.
【单选题】Q2: What does Juan Somavia, Director General of the International Labour Organization, say ?
A.
Many countries have not taken measures to create enough jobs.
B.
Few countries know how to address the current economic crisis.
C.
Few countries have realized the seriousness of the current crisis.
D.
Many countries need support to improve their people's livelihood.
【简答题】What does Juan Martinez do today? He works for an organization that connects city kids with _______ .
【单选题】what does ,Juan Somavia, the director general of the International Labor Organization say?
A.
Many countries have not taken measures to create enough jobs.
B.
Few countries know how to address the current economic crisis.
C.
Few countries have realized the seriousness of the current crisis.
D.
Many countries need support to improve their people's livelihood.
【简答题】What does Juan Somavia, Director-General of the International Labour Organization say?
【单选题】What does, Juan Somavia , the director general of the International Labor Organization say?
A.
Many countries have not taken measures to create enough jobs 。
B.
Few countries know how to address the current economic crisis.
C.
Few countries have realized the seriousness of the current crisis.
D.
Many countries need support to improve their people’s livelihood.
【简答题】均匀无穷长直圆柱形螺线管，每单位长度线圈匝数为n，电流为I，试用唯一性定理求管内外磁感应强度B．
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