简介:摘要本文围绕ABB控制系统汽机保护子模件TPS02在线更换方案进行技术讨论,对该子模件处理的各个信号在异常情况下进行风险分析,并提出安全预控措施,希望对以后有同类故障的处理有一定的帮助作用。
简介:本单元知识网络同步讲解SectionA1.—Didyouseeanycows?你看到奶牛了吗?—Yes,Idid.Isawquitealot.是的,我看到了许多奶牛。(1)quitealot意为'许多;相当多',可以单独使用,也可跟of+可数/不可数名词。Wedrankquitealotofwine.我们喝了不少酒。Isawquitealotofflowers.我看到了相当多的花。
简介:Inthe13thcentury,MarcoPolotraveledalongwaytoChina.HewasafamousItalian1.DuringhisstayinChina,hesawmanywonderfulthings.Oneofthethingshe2wasthattheChineseusedpapermoney.Peoplein3countriesdidn’tusepapermoneyuntilthe17thcentury.However,peopleinChinabegantousepapermoneyinthe10thcentury.4wasinventedbyaChineseabout2,000yearsago.HisnamewasCaiLun.Hethen5thesepiecesofpapertogetherandmadethemintoa6.Nowpapermainlycomesfromtrees.Weuseiteveryday.Sometimeswewastealotofit.Ifwekeepondoingso,peoplehavetocutdownmanymoretrees.Thentherewillnotbeanytreesleft.Ifthereareno7,therewillbenopaper.