切换到BOOK2窗口,以水平并排方式排列当前所有窗口。
点窗口,点 BOOK2 ,点窗口,点重排窗口,分别在 “以水平并排 ”前点一下, 在“当前所有窗口 ”前打上 √,点确定。完成
暂无解析
数据库应用系统功能设计包括哪两个方面?每个方面主要由哪些设计步骤组成?
简述现场用电一般防火要求?
Thefoodweeatseemstohaveprofoundeffectsonourhealth.Althoughsciencehasmadeenormousstepsinmakingfoodmorefittoeat,ithas,atthesametime,mademanyfoodsunfittoeat.Someresearchhasshownthatperhapseightypercentofcancerisrelatedtothedietaswell,especiallycancerthecolon.Differentculturesaremorepronetocontractcertainillnessesbecauseofthefoodthatischaracteristicinthesecultures.Thatfoodrelatedtollnessisnotanewdiscovery.In1945,governmentresearchersrealizedthatitratesandnitrites,commonlyusedtopreservecolorinmeats,andotherfooddditives,causedcancer.Yet,thesecarcinogenicadditivesremaininourfood,nditbecomesmoredifficultallthetimetoknowwhichthingsonthepackginglabelsofprocessedfoodarehelpfulorharmful.Theadditiveswhichweeatarenotallsodirect.Farmersoftengivepenicillintobeefandpoultry,andbecauseofthis,penicillinhasbeenfoundinthemilkoftreatedcows.Sometimessimilardrugsareadministeredtoanimalsnotformedicinalpurposes,butforfinancialreasons.Thefarmersaresimplytryingtofattentheanimalsinordertoobtainahigherpriceonthemarket.AlthoughtheFoodandDrugAdministration(FDA)hastriedrepeatedlytocontroltheseprocedures,thepracticescontinue.
48.Whatisthemaintopicofthepassage?
A.Foodandourhealth
BFoodandadditives
C.Foodandcancer
DFoodandculture
49AllofthefollowingstatementsaretrueEXCEPT_______.
AFortypercentofcanceriscausedbyproblemsrelatedtofood.
BResearchershaveknownaboutthepotentialdangeroffoodadditivesformanyyears
C.Weeatsomeofthefoodadditivesdirectlyandsomeindirectly
DDrugsarealwaysgiventoanimalsformedicinalpurposes
50.Whydofarmersgivedrugstotheiranimals?
A.tospeedupthegrowthofanimals
BTomaketheanimalsfatter
Ctomaketheanimals’meatfittoeat
DTomaketheanimals’meatrichinnutrients
51.Itcanbeinferredfromthepassagethat_________.
Ascientisthavemadeallthefoodfittoeat
Bonlyinrecentyearshavepeoplefoundthatthefoodisrelatedtoone’sillness
Callkindsofcancerarerelatedtothediet
Dsomeadditivesareharmfultoourhealth
52.Theword“this”inthesecondsentenceofparagraph2mostprobablyrefersto__________.
Afarmer
Bpenicillin
Cbeefandpoultry
Dthefactthatfarmersoftengivepenicillintoabeef
请试着比较一下黑盒测试、白盒测试、单元测试、集成测试、系统测试、验收测试的区别与联系
两个对象值相同(x.equals(y)==true),但却可有不同的hashcode,这句话对不对?并简要说明理由。
简述集成测试的过程。系统集成测试主要包括以下过程:
简述计算机网络协议的概念。
某村地处山区,村委会决定开山修路,通过公路将本村与外界连接起来,使村民们更多地了解外面的世界,同时借交通运输带动本村庄经济发展。施工队进驻施工地点后发现要修筑道路的路基存在大量岩石。技术人员遂决定对路基石方进行爆破。
问题:
1、路基石方工程常用爆破方法有哪些?
2、技术人员选定用药壶炮法爆破,此法的特点是什么?
写出以下JavaScript代码在浏览器中的显示结果
分析以下ASP程序代码的运行结果