下列哪项缺乏时，红细胞内游离原卟啉增高

医生能在手术过程中高度集中注意几个小时，体现了（）

SupposethatyoupurchaseapurebredScottishTerrierpuppy.Youpay$800forthedogbecauseitcomesfromchampionstock.Thedog’sownerdidnotdiscussthedog’spedigreewithyou.Ifyoudiscoverlaterthatthedogisnotworth$800,butonly$400,canyouhavethecontractrescindedorcanceledbasedonyourmistake?

甲公司欠乙公司20万元无力偿还。现丙公司欠甲公司15万元，已到清偿期，但甲公司明示放弃对丙的债权。对甲公司这一行为，乙公司可以：（）

.咽部手术术后宜

表现为不同程度的视力障碍，视物变形，眼前黑影视野缺损，为哪种视网膜病变表现

18.JudgeHaltsWorkonMicrosoft’sJEDIContract,aVictoryforAmazonAfederaljudgeinWashingtonorderedMicrosoftonThursdaytohaltallworkona$10billioncloud-computingcontractforthePentagon,inavictoryforAmazon,whichhadchallengedtheawardingofthecontract.Inasealedopinion,thejudgeoftheCourtofFederalClaimsorderedworktostopontheJointEnterpriseDefenseInfrastructureproject,knownasJEDI,untilAmazon’slegalchallengewasresolved.The10-yearcontractwasoneofthelargesttechcontractsfromthePentagon,andMicrosoftwassettobeginworkonitthismonth.Thedecisionaddstotheacrimonysurroundingthelucrativedeal,whichwasamajorprizeinthetechnologyindustry,andratchetsupthelegalbattlearoundthetransformationofthemilitary’scloud-computingsystems.InDecember,AmazonfileditslegalchallengeagainsttheawardingofJEDI,sayingthatMr.Trumpused“improperpressure”onthePentagonatitsexpense.Inanothercourtfilingthismonth,Amazonarguedthataninjunctionwasnecessarytopreventitfromlosingtheprofititcouldearnfromthecontract.“ThisisallsettingthestageforamajorcourtfightbetweenAmazonandMicrosoft,withtheD.O.D.caughtinbetween,”saidDanielIves,ananalyst.“It’sapoliticalfootballthat’sbeingkickedaround.”QuestionWhichofthefollowingisasynonymof“lucrative“in“thedecisionaddstotheacrimonysurroundingthelucrativedeal?”

所有的金融资产均需要计提减值（）

以摊余成本计量的金融资产用“债权投资”账户表示

交易性金融资产出售时的差额用“投资收益”账户表示（）

运输途中的一切损耗均应计入采购成本。（）

A公司为一般纳税人，购买了一批材料，买价10万元，增值税1.3万元，运输费0.1万元，则购买此材料的采购成本为11.4万元。（）

对于带有追索权的应收票据贴现，当出票人不按期付款时，银行可以向背书企业追索，背书企业承担着潜在的债务责任。这种责任在会计上称为其他长期负债。（）

企业以现金支付职工奖金50000元。()

我国会计准则规定，所有单位都应以权责发生制为基础进行核算。（）