数列7, 7, 7, 7, 7, 7, …为等差数列

<spanstyle="text-decoration:none">Foraclearerpictureofwhatthestudentknows,mostof&nbsp;(1)____<br/>teachersuseanotherkindofexaminationinadditiontoobjectives<br/>tests.Theyuse“essay”tests,whichrequirestudentstowritelong<br/>answersofbroad,generalquestions.Oneadvantageoftheessay(2)____<br/>testisthatitreducestheelementoflucky.Thestudentscannotget</span><spanstyle="text-decoration:none">(3)____<br/>highscorejustbymakingaluckyguess.Otheradvantageisthatit(4)____<br/>showstheexaminermoreaboutthestudent’sabilitytoputfacts<br/>togetherintoameaningfulwhole.Itshouldshowhowdeeplyhe(5)____<br/>hasthoughtofthesubject.Sometimes,though,essaytestshave<br/>disadvantages,either.Somestudentsareabletowritegood(6)_____<br/>answerswithoutreallyknowingmuchaboutthesubject,asother(7)_____<br/>studentswhoactuallyknowthematerialhavetroubletoexpress(8)_____<br/>theirideasinessayform.<br/>Besides,onanessaytestthestudent’sscoremaydependon<br/>theexaminer’sfeelingsatthetimeofreadingtheanswer.Ifheis<br/>feelingtiredorbored,thestudentmayreceivealowerscorethan<br/>heshould.Anotherexaminerreadingthesameanswermightgiveit<br/>muchhighmark.Fromthisstandpointtheobjectivetestgiveseach&nbsp;(9)_____<br/>studentafairerchance.<br/>Whenanobjectivetestoranessaytestsareused,problems(10)_____<br/>arise.Whensomeobjectivequestionsareusedalongwithsome<br/>essayquestions,however,afairlyclearpictureofthestudent’s<br/>knowledgecanusuallybeobtained.</span>

PH值是溶液酸碱度的一种表示方法，（）时，溶液呈中性；（）时，溶液呈酸性；（）时，溶液呈碱性。 A: PH=7、PH>7、PH<7 B: PH=7、PH<7、PH>7 C: PH>7、PH=7、PH<7 D: PH<7、PH=7、PH>7

书挂期限为（）天、口挂期限为（）天、印挂期限为（）天。 A: 7、7、7 B: 7、7、10 C: 7、5、7 D: 7、5、10

7 7=?

17×(-7)÷(-17)×7等于（　　） A: 1 B: 49 C: -7 D: 7

数字推理：4/7，1，10/7，13/7（） A: 12/7 B: 11/7 C: 15/7 D: 16/7

对于YOLO v1算法，网络的输出维度是多少（假设每张图划分为7*7网格，每个网格预测2个边框，识别的物体类别有30个）？ A: 7*7*40 B: 7*7*30 C: 7*7*32 D: 7*7*42

元素周期表含有（）个周期，（）个族。 A: 7；7 B: 7；18 C: 7；16 D: 7；14

以下能正确定义整型变量a，b，c并为其都赋初值7的语句是（） 。 A: inta=7,b=7,c=7; B: inta=7 b=7 c=7; C: inta=b=c=7; D: a=b=c=7;