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无节奏流水施工的特点是什么？

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[音频]SectionBDirections:Inthissection, youwillhear3shortpassages.Attheendofeachpassage，youwillhearsomequestions.Boththepassageandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C),andD).ThemarkthecorrespondingletterontheAnswerSheetwithasinglelinethroughthecentre.PassageOneQuestions11tol3arebasedonthepassageyouhavejustheard.11.A)Becauseheledhisteamstomanychampionships.B)Becausehesetasmanyas65differentrecords.C)Becausehestillplayedthegameafterheretired.D)Becausehedidn'tstopplayingevenwhenhewasseriouslyinjured.12.A)Helostthefinalchancetowinachampionship.B)Hewasknockedoutduringonecontest.C)Hebrokeaboneinthewristduringamatch.D)Hewasawardedwitha$1.5millionhouse.13.A)Tobreakthepreviousrecords.B)Tobuyaluxuryhouse.C)Towinonemorechampionshipforhisteam.D)ToplayagainsttheNewYorkteamonceagain.PassageTwoQuestions14tol6arebasedonthepassageyouhavejustheard.14.A)Toenjoyagoodstory.B)Toseetheactorsandactresses.C)Toexperienceanexcitinglife.D)Toescapetheireverydaylife.15.A)Theyfeelthateverythingonthescreenisfamiliartothem.B)Theyaretouchedbythelife?storiesoftheactorsandactresses.C)Theytrytoturntheirdreamsintoreality.D)Theybecomesoinvolvedthattheyforgettheirownproblems.16.A)Becausetheyarewell?madeandthestoriesareinteresting.B)Becausetheheroeshavetocopewithmanyproblemsandfrustrations.C)Becausethecharactersinthemoviesarefreetodowhatevertheylike.D)Becausegoodguysinthemoviesalwayswinintheend.PassageThreeQuestions17to20arebasedonthepassageyouhavejustheard.17.A)Becausethebottlewasemptyanduseless.B)Becausehewantedtolightentheloadofhissmallplane.C)BecausethebottlemightbeusefultothenativeAfricans.D)Becausehewantedtoamusethelocaltribespeople.18.A)Amessagefromtheoutsideworld.B)Awarningfromthegods.C)Asymbolofmisfortune.D)Agiftfromthegods.19.A)ThelocalAfricansarepeace?lovingpeople.B)Sodabottlesareverypreciousinsomeremoteareas.C)Atrivialthingmaysometimesbringaboutundesirableconsequences.D)Cautionmustbetakeninintroducingnewtechnology.20.A)Theythoughtthatthegodswereallcrazy.B)Theywereisolatedfromtheoutsideworld.C)Theyenjoyedlivinginthepeacefuldesert.D)Theyworshippedthegodsallthemoreaftertheincident.

通常用百人宽度指标来表示（）的宽度。

A. 安全出口
B. 防火门
C. 疏散通道
D. 防火窗

影剧院、礼堂的观众厅每个安全出口的平均疏散人数不应超过（）人。

A. 100
B. 250
C. 400
D. 450

某16层民用建筑，一至三层为商场，每层建筑面积为3000㎡;四至十六层为单元式住宅，每层建筑面积为1200㎡;建筑首层室内地坪高为±0.000m，室外地坪高为﹣0.300m，商场平层面面层标高为50.9m.根据《建筑设计防火规范》GB50016-2014规定的建筑分类，该建筑的类别应确定为()。

A. 二类高层公共建筑
B. 一类高层公共建筑
C. 一类高层住宅建筑
D. 二类高层住宅建筑