一高层住宅工程,正在装修,外脚手架已经拆到五层楼板处,三个班组作了分工,一组贴面转,

题型:判断题 案例分析题

问题:

一高层住宅工程,正在装修,外脚手架已经拆到五层楼板处,三个班组作了分工,一组贴面转,二组负责剪断脚手架的连墙件,三组拆除脚手架,当五层面板刚贴完一半时,脚手架向外倒塌,架上人员全部坠落。分析事故原因。

(1)连墙件应随施工进度逐层拆除。如不拆除,影响贴面砖的进度。

(2)一组作业进度太慢,二组作业进度太快。

(3)现场无人协调各组进度。

(4)没有对施工人员进行安全及交底。

拆除脚手架前,没有编制拆除方案,只在现场临时作了分工

考点:建筑类天津三类人员考试天津三类人员考试题库
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运输需求是依赖于本源性需求而产生的,这体现了运输需求的( )。

A.派生性
B.经济性
C.波动性
D.替代性

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命题“平行四边形的对角线互相平分”的逆命题是______.

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函数y=cos(2x-
6
)
的最小正周期是(  )
A.
π
2
B.πC.2πD.4π
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How did the Olympic Games start In ancient Greece athletic festivals were very important and had p ________ (1). Originally the Festival was held in honour of .Zeus, the supreme god in Greek Mythology. Eventually the Olympian athletic festival had lost its ________ (2) and became an international event. No one knows exactly ________ (3) the Olympic Games go, but some scholars recorded date from 776 B.C.According to some scholars, at first the only Olympic event was ________ (4), called a stadium and that was the only event until 724 B.C. After that, other ________ (5) were added and sixteen years later in ________ (6) the pentathlon was added and wrestling became part of the games. This pentathlon was a five-event match which ________ (7) running, wrestling, leaping, throwing the discus, and hurling the javelin.The games were held ________ (8) and after an uninterrupted history of 1170 years, the games ________ (9) in A.D. 394, the Christian era, because of their pagan origin.It was over ________ (10) before there was another such international athletics gathering. In 1896, the first of the modern ________ (11) opened in Athens, Greece.Nowadays, the Games are held in different countries ________ (12). The host country provides vast facilities such as stadiums and ________ (13).Many more sports are represented, including the very celebrated event: ________ (14).The Olympics start with the arrival in the stadium of a torch, ________ (15) on Mount Olympus by the sun’s rays. The torch is carried by ________ (16) to the stadium. The Olympic flame symbolizes the ________ (17) of the ancient Greek athletic ideals, and it burns throughout the Games until ________ (18). The well-known Olympic flag, however, is ________ (19): the five interlocking rings symbolize the uniting of all five continents ________ (20).

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