消防工程师考试一级消防工程师模拟试题(2017/4/17)
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第1题:RighttrianglePQRistobeconstructedinthexy-planesothattherightangleisatPandPRisparralleltothex-axis.Thex-andy-coordinatesofP,Q,andRaretobeintegersthatsatisfytheinequalities-4<=x<=5,6<=y<=16,howmanydifferenttriangleswiththesepropertiescouldbeconstructed? A.110 B.1100 C.9900 D.10000 E.12100 |
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第2题:符合 X^2+Y^2<=100的整数解共有多少对? |
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第3题:从1,2,3,4,5,6,7,8,9中选出三个数字组成一个三位数,这个三位数的digits中有两个相同,另一个digit与其它两个都不同,问共有多少个这样的三位数?() A.72 B.144 C.180 D.216 E.54 |
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第4题:IfBobcandoajobin20daysandJanecandothejobin30days,theyworktogethertodothisjobandinthisperiod,Bobstopworkfor2.5daysandJanestopworkforxdays,andthejobbefinishedfor14days,whatisx?() A.1.6 B.3.2 C.1.5 D.1.25 E.1.15 |
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第5题:Thereare1200respondentstoapoll,eachfavoringtheirpreferenceforcandidatesA,B,andC.54%favoredA,48%favoredB,and42%favoredC,andthereis30%favoredbothAandB.what’sthelargestpossiblenumberofrespondentsfavoringC,butnotC&B,norC&A?() A.25% B.30% C.28% D.38% E.40% |
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