“三类人员”指那些人员，分别需持什么证?
混凝土养护的目的是什么?自然养护应符合哪些要求?
某桥基础为6根2.0m的桩基，桩长35m，桩顶设置承台。地质条件如下：原地面往下依次为2m的覆盖层和含15%砂砾石的土，施工水位比桩顶高1.5m，施工单位拟选用正循环回转转机，钢护筒结构，采用导管法灌注水下混凝寸。
问题：
1、在成孔过程中应注意哪些方面?
2、在清孔过程中应注意哪些方面?
3、如何进行水下混凝土的浇筑?
Directions:Inthissection,youwillhear10shortconversations.Attheendofeachconversation,aquestionwillbeaskedaboutwhatwassaid.Boththeconversationandthequestionwillbespokentwice.Aftereachquestiontherewillbeapause.DuringthepauseyoumustreadthefourchoicesmarkedA),B),C)andD),anddecidewhichisthebestanswer.ThenmarkthecorrespondingletterontheAnswerSheetwithasinglelinethroughthecenter.
1.A)Dosometyping.
B)Buysomepaper.
C)Askthemantotype.
D)Wanttorunwiththeman.
2.A)10:50
B)10:15
C)10:48
D)10:52
3.A)Husbandandwife.
B)Agirlandherboyfriend.
C)Teacherandstudent.
D)Oldfriends.
4.A)Policeman.
B)Salesman.
C)Cardriver.
D)Conductor.
5.A)Inaschool.
B)Inatheater.
C)Inarestaurant.
D)Athome.
6.A)Sheagreed.
B)Shedisagreed.
C)Shewasimpatient.
D)Shewasworried.
7.A)Somethingcold.
B)Coffee.
C)Tea.
D)Somethinghot.
8.A)Gold.
B)Blue.
C)Brown.
D)Black.
9.A)Hedidn’knowtwheretofindtheprofessor.
B)Hehaddifficultydoingtheexperiment.
C)Hefailedtheexam.
D)Hecouldn’graduatetfromtheuniversity.
10.A)Themaniscoughing.
B)Themangaveupsmoking.
C)Themanhasalungdisease.
D)Themanhasaheartattack
简述安全检查的目的及任务?
简要说明事务的原子性。
土方施工准备技术要点有哪些?
请用Python语言编写一个简易的猜数字游戏程序。
施工质量控制目标的主要内容包括哪方面的内容?
隧洞回填灌浆与固结灌浆有什么不同?