____系指可能造成死亡、人身傷害、環(huán)境破壞或財(cái)產(chǎn)和經(jīng)濟(jì)利益損失的失控事件。
A、危險(xiǎn)因素B
暫無(wú)解析
背景資料：
某寫字樓工程，地下1層，地上15層，框架剪力墻結(jié)構(gòu)。首層中廳高12 米，施工單位的項(xiàng)目部編制的模板支架施工方案是滿堂扣件式鋼管腳手架，方案由項(xiàng)目部技術(shù)負(fù)責(zé)人審批后實(shí)施。施工中，某工人在中廳高空搭設(shè)腳手架時(shí)隨手將扳白手放在腳手架上，腳手架受振動(dòng)后扳手從上面滑落，順著樓板預(yù)留洞口(平面尺寸0.25m×0.50m)砸到在地下室施工的王姓工人頭部。由于王姓工人認(rèn)為在室內(nèi)的樓板下作業(yè)沒有危險(xiǎn)，故沒有戴安全帽，被砸成重傷。
問題：
1. 分析該起安全事故的原因。
2. 寫出該模板支架施工方案正確的審批程序。
3. 扳手放在腳手架上是否正確?說(shuō)明理由。
4. 何謂“三寶”和“四口”?本例的預(yù)留洞口應(yīng)如何防護(hù)?
什么叫做三相五線制?三相五線制標(biāo)準(zhǔn)導(dǎo)線顏色是什么?
Part IV Translation
As the source of aluminum is almost inexhaustible, we can expect that more and more uses will be found for this versatile metal. (Passage Two)
Directions:
In this section, you will hear two passages. At the end of each passage, you will hear some questions. Both the passage and the questions mwill be spoken only once.After you hear a question, you must choose the best answer from the four choices marked A, B, C and D. Then mark the corresponding letter on the Answer Sheet with a single line through the centre.Passage One Questions 9 to 12 are based on the passage you have just heard.
9、 A. She escaped unhurt.
B. She witnessed the shooting.
C. She was shot to death.
D. She was 15 years old.
10、 A. 5. B. 7.C. 11.D. 12.
11、 A. Spear's digital camera.
B. One suspect's gun.
C. The queen's video.
D. Berry's purse.
12、 A. Civilians should keep away from the business zone.
B. Everybody should think about how to fight against crimes.
C. Government should schedule to negotiate with terrorists.
D. People should emigrate because of domestic high crime rate.Passage Two
Questions 13 to 15 are based on the passage you have just heard.
13、 A. Increasing salaries.
B. Surging energy production.
C. Booming housing market.
D. Rising interest rates.
14、 A. Increasing interest rate.
B. Decreasing financial products.
C. Buying substantial securities.
D. Expanding financial business.
15、 A. Fracking can influence the burning of fossil fuels.
B. The use of fracking will do harm to environment.
C. Fracking technology is a safe practice in industry.
D. The use of fracking is beneficial to people's health.
排水系統(tǒng)的安裝程序?yàn)椋盒l(wèi)生器具→排水支管→排水橫支管→排水立管→排水干管→排出管。
