When required in tonnage quantities, oxygen is prepared by the’ fractional disti

游客2025-05-08 22

问题 When required in tonnage quantities, oxygen is prepared by the’ fractional distillation of liquid air. The process takes advantage of the fact that when a ______ gas is allowed to expand, it cools. (compress)

选项

答案 compressed

解析

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When required in tonnage quantities, oxygen is prepared by the’ fractional disti

Inthispart,youarerequiredtowriteacompositionentitledChina’sOver

______theymustputasidetheirprejudices,______.wemustbepreparedtoacc

Mr.Mortongradually______aknowledgeofthesubject.A、attainedB、requiredC、a

Whenrequiredintonnagequantities,oxygenispreparedbythe’fractionaldisti

Anextensivefoundationinthebasicsciencesshouldberequiredofallscience

______,wateriscomposedoftwopartshydrogenandonepartoxygen.A、Asisknow

Heisconstantlylate,andill-preparedwhenhedoesfinallyarrive.Heisjeopa

Inthispart,youarerequiredtowriteacompositionentitledOnSustainabl

Inthissectionyouarerequiredtowriteanessayinaccordancewiththefo

Inthispart,youarerequiredtowriteacompositionentitledMigrantFarme

We’reworking______theclocktoaccomplishtheproposalbeforeTuesday.A、afterB

Tomeettheneedofthequickeningpaceofmodernlife,thereappearedmore____

根据商标显著性的强弱程度，可以将商标分为()A.臆造商标 B.任意商标 C.

不用造影剂而显示尿路梗阻部位及程度的检查是A、CT B、KUB+IVP C、

新课程倡导的学习方式有：自主学习（）和探究学习。

投资过程较短，仅需要进行简单的定性判断时，()是一种快速便捷的计算方法。A:预估

妇人久患血崩，肢体消瘦，饮食道口，但闻腥臊，口出津液，强食少许，腹中作胀，此血枯

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theymustputasidetheirprejudices,.wemustbepreparedtoacc