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桥式起重机“制动器制动不灵刹不住车,起升机构溜钩,运行机构溜车,断电后制动滑行距离过大”的现象,引起的可能原因有()。

A、制动瓦衬胶粘在制动轮上
B、制动轮工作表面有油污
C、制动瓦衬严重磨损,铆钉裸露
D、主弹簧调整不当或弹簧疲劳,老化,张力太小,制动力矩过小所致
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正确答案:

BCD

答案解析:

暂无解析

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Asianeconomieswillcontinuetoexpandrapidlyinthenexttwoyearsonthebackofforeigninvestments,exportsanddomesticdemand,butwillnotbefreeofworries,accordingtoarecentsecuritiescompanyeconomicreport.Massiveinfrastructurespending,thebenefitsofpastinvestmentsandderegulationandgrowingregionaltradewillpushalongregionalgrowth.

ThereporttippedChina’sgrossdomesticproducttogrowby9.5percentin1996and10.5percentin1997,andHongKong’stogrowby4.3and5.0percent.Singapore’srealGDPwasforecasttogrowby7.6and7.4percent,Malaysia’sby8.6and8.1percent,Thailand’sby8.8and8.4percent,Indonesia’sby7.3and7.1percentandPhilippines’by5.6and5.8percent.

“However,allisnotrosy,”cautionedthereport,whichlistedoverheatingastheregion’sbiggestchallengeintheshorttermandskilled-laborshortagesinthelongrun.

Itcitedstrainsfromrapidgrowththathadbeguntostretchcurrentaccountdeficitsandspurinflationinsomeregionaleconomies,whichcouldpreventtheircentralbanksfromloweringinterestrates.

“Thisimpliesthateconomicvulnerabilitytounexpectedshockswillremainhigh,”thereportsaid,forecastingafurthertighteningofmonetarypolicyincountriessuchasthePhilippinesandMalaysia,andnosignificanteasinginThailand,IndonesiaandChina.

CrosbySecuritiesalsocitedmassivenewinvestmentprogramsgeneratedbydemandsoninfrastructuresuchaspower,telecommunicationsandtransportwhichhadfuelledover-heating.

ItsaidAsiawouldalsofaceabiggerchallengefromnewlyderegulatingeconomiesinEasternEuropewhichofferedlowercostsandbetter-educatedworkerstoforeigninvestors.

Asia’smainforeigninvestorsshould,however,continuetoexpandtheirpresenceintheregion,thesecuritieshousesaid,notingnewtrendsofintra-Asianinvestment.

Singaporeisshiftingitslowervalue-addeddiscdriveandelectronicsindustrytoMalaysia,whichinturnismovingsomeofitsgarment-makingandconsumerelectronicsmanufacturingtoIndonesiaandThailand.Thailand,MalaysiaandSingaporeareincreasinglyinvestinginVietNam,MyanmarandLaos.

“Asiawillbenefitfromthistrendinseveralways,”thereportsaid.

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A.foreigninvestmentB.demandsinAsiancountries.

C.exportD.alloftheabove

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A.SingaporeB.Thailand

C.HongKongD.China

()3Yearslater,theprobleminAsianeconomymaybe_________________.

A.toolittleinvestmentB.toomuchinvestment

C.notenoughqualifiedlaborsD.monetaryinstability

()4Accordingtothisreport,economicchangesinEastEuropeare___________.

A.harmfulB.challenging

C.helpfulD.useless

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A.optimisticB.pessimistic

C.moreoptimisticthanpessimisticD.morepessimisticthanoptimistic

Doyourememberthebuilding____flewaredflagalltheyearround?

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