X 线管阴极使用钨丝的原因是
更新时间:2024-11-15 20:55:41 A、导电率低C
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Australiaislocatedbetween________andtheIndianOcean.
重写句子：Whenwearerelievedofworkingpressuresoftheoffice,wecanenjoyhappinessandrelaxationathome.(modifyingphrase)
In1900,theenergyderivedfromburningpetroleumwasonlyfourpercent______ofcoal.
重写句子：WelivedinasmalltownwhenIwasasmallchild.WemovedtoShanghailater.Myfatherlandedabetterjobthere.(compound-complexsentence)
改写病句：Insummer,Juannadidn’tlovetravelinginRomeshefeltitwastoohotthere.
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