• 2022-06-04 问题

    在PLC编程指令中,代表逻辑“或”操作的功能指令为()。 A: AND B: OR C: ORNOT D: ANDNOT

    在PLC编程指令中,代表逻辑“或”操作的功能指令为()。 A: AND B: OR C: ORNOT D: ANDNOT

  • 2022-06-17 问题

    使操作符后的关键词在检索结果不出现的布尔逻辑操作符是() A: OR B: AFTER C: ANDNOT D: *

    使操作符后的关键词在检索结果不出现的布尔逻辑操作符是() A: OR B: AFTER C: ANDNOT D: *

  • 2022-05-29 问题

    查找“胰岛素治疗糖尿病”的文献,其检索式应为()。 A: A胰岛素AND糖尿病 B: B胰岛素OR糖尿病 C: C胰岛素NOT糖尿病 D: D胰岛素ANDNOT糖尿病

    查找“胰岛素治疗糖尿病”的文献,其检索式应为()。 A: A胰岛素AND糖尿病 B: B胰岛素OR糖尿病 C: C胰岛素NOT糖尿病 D: D胰岛素ANDNOT糖尿病

  • 2022-06-04 问题

    某教学设备销售部门制定一项销售优惠政策,一次购买100台或100台以上者按八五折优惠,购买者是教师、学生按九折优惠。设C1表示购买的台数,C2为1、2、0分别表示教师、学生和其他人员,则符合九折优惠判定条件为() A: (C1<100)ANDNOT(C2=0) B: (C1<100)ANDNOT(C2>0) C: NOT(C1>100)AND(C2=0) D: NOT(C1<100)AND(C2>0)

    某教学设备销售部门制定一项销售优惠政策,一次购买100台或100台以上者按八五折优惠,购买者是教师、学生按九折优惠。设C1表示购买的台数,C2为1、2、0分别表示教师、学生和其他人员,则符合九折优惠判定条件为() A: (C1<100)ANDNOT(C2=0) B: (C1<100)ANDNOT(C2>0) C: NOT(C1>100)AND(C2=0) D: NOT(C1<100)AND(C2>0)

  • 2022-06-03 问题

    在ASP中,一个条件判断语句的条件是A等于1且B等于4,这个条件的正确写法是?() A: A=1andB=4 B: A=1&&B=4 C: not(A<;>;1)andnot(B<;>;4) D: not(A<;>;1)&¬(B<;>;4)

    在ASP中,一个条件判断语句的条件是A等于1且B等于4,这个条件的正确写法是?() A: A=1andB=4 B: A=1&&B=4 C: not(A<;>;1)andnot(B<;>;4) D: not(A<;>;1)&¬(B<;>;4)

  • 2022-06-06 问题

    B)<em>Readthefollowingpassageandinfilleachblankwithonewordinoneofthefollowingthreeways</em><em>:</em><em>①</em><em>accordingtothecontext</em><em>,</em><em>②</em><em>usingthecorrectformofthewords</em><em>,</em><em>or</em><em>③</em><em>accordingtothegivenletter(s)oftheword</em><em>.</em>(阅读下面的短文,用以下三种形式之一完成短文填空:①根据上下文填空;②用所给单词的正确形式填空;③根据单词所给字母填空。每空一词。)<br/><alone></alone>Choleraisadiseasespreadbydirtywater,eitherwhenpeopledrinkthewater,(51)______eatfoodwhichhasbeenwashedinthewater,andnot(52)______(proper)cooked.Unfortunately,untilthemid19thcentury,peoplebelievedthatthedisease(53)t______throughtheair.Inthe(54)______(crowd)citiesof19th-centuryBritain,choleraspreadeasily.Mostdoctorswronglybelievedthatfreshairandabetterdietwould(55)p______thedisease.Hugefireswereusuallylitinthestreetstodrive(56)______theinfection,andtheclothesofvictimswerealsoburned.Thestreetswerealsocleanedthoroughly(57)w______powerfulchemicals.However,peoplecontinuedtosufferdreadfully.In1854,adoctorinLondon,JohnSnow,announcedwithcertaintythatcholeraspreadthrough(58)i______drinkingwater.Hedidthisbycarefully(59)______(collect)statisticsabouttheinfectioninonepartofLondon.Hemanagedtoprovethatthewaterwas(60)______(entire)responsibleforcholerainfection.

    B)<em>Readthefollowingpassageandinfilleachblankwithonewordinoneofthefollowingthreeways</em><em>:</em><em>①</em><em>accordingtothecontext</em><em>,</em><em>②</em><em>usingthecorrectformofthewords</em><em>,</em><em>or</em><em>③</em><em>accordingtothegivenletter(s)oftheword</em><em>.</em>(阅读下面的短文,用以下三种形式之一完成短文填空:①根据上下文填空;②用所给单词的正确形式填空;③根据单词所给字母填空。每空一词。)<br/><alone></alone>Choleraisadiseasespreadbydirtywater,eitherwhenpeopledrinkthewater,(51)______eatfoodwhichhasbeenwashedinthewater,andnot(52)______(proper)cooked.Unfortunately,untilthemid19thcentury,peoplebelievedthatthedisease(53)t______throughtheair.Inthe(54)______(crowd)citiesof19th-centuryBritain,choleraspreadeasily.Mostdoctorswronglybelievedthatfreshairandabetterdietwould(55)p______thedisease.Hugefireswereusuallylitinthestreetstodrive(56)______theinfection,andtheclothesofvictimswerealsoburned.Thestreetswerealsocleanedthoroughly(57)w______powerfulchemicals.However,peoplecontinuedtosufferdreadfully.In1854,adoctorinLondon,JohnSnow,announcedwithcertaintythatcholeraspreadthrough(58)i______drinkingwater.Hedidthisbycarefully(59)______(collect)statisticsabouttheinfectioninonepartofLondon.Hemanagedtoprovethatthewaterwas(60)______(entire)responsibleforcholerainfection.

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