8.Mycameracanbe_____totakepicturesincloudyorsunnyconditions.A.treatedB.adjustedC.adaptedD.remedied满分：2.5分9.Ihad______inmysecretary;shewoulddotherightthing.A.dependenceB.confidenceC.knowledgeD.responsi

问题：8.Mycameracanbe_____totakepicturesincloudyorsunnyconditions.A.treatedB.adjustedC.adaptedD.remedied满分：2.5分9.Ihad______inmysecretary;shewoulddotherightthing.A.dependenceB.confidenceC.knowledgeD.responsibility满分：2.5

答案：↓↓↓

高铭学的回答：

网友采纳　　设需要x个月(包括2014年4月),该市计划投放新能源汽车的总量达到30000辆由题：30000=300+（300+75）+（300+2x75）+···+[300+（x-1）75]设300+（300+75）+（300+2x75）+···+[300+（x-1）75]为数列AnSn=xa1+x(x-1...