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问一句话怎么理解13个自然数的平均数是12.43,最后一位数是错的,是由于此和不是13的整数倍,因而平均数是小数,又由于平均数精确到小点后最后一位数,所以13个自然数之和必大于12.39的13倍,而 请教一句话的理解While speakers may vary in their own speech across dialect boundaries,often subconsciously,they were easily aware of slight differences in the speech of others.【A form of linguistic prejudice emerges in that groups may arbit 图中为浙江沿海地区某区域示意图,读图回答下列问题 （1）图中所示地区气候类型是--------气候；典型的地带典型的地带性土壤是---------------壤.在农业土地利用方面,北部100米以上宜种植经济 询问UCLA申请要求中的一句话的意思.UCLA的申请要求中An international student whose post-secondary education is completed outside of the U.S. is expected to hold a degree representing completion of at least four years of study with ab 英语提问：一下一句话的时态不理解,When the fire broke out in the basement,he had gone down to investigate immediately.（这是一则新闻报导里的一句话）当地下室发生突发大火时,他立刻前去查看.这句话火灾 兄弟们帮帮忙啊,来篇超简短外语作文外语老师叫交一篇外语邮件,不限类容,简短就好,我外语他差帮帮忙,老是：女,姓：程,比较温和,上课也很活跃（大二的上课方式也多）,我们换了3个外语老 the,were,no,buses,in,past,there,airconditioned.连词成句 用short,mother,hair,with,dark,her,is连词成句 请教粉石英选矿知识,含量在99以上的粉石英精矿可以做哪些产品,能应用在哪些领域?请问什么标准数据的粉石英矿算好矿?粉石英目前应用领域最大的是哪几个方面? 求一女生英文名 中文名字为 书乐起的谐音最好差不多 Everyone needs ____（have）at least eight hours' sleep a night.有讲解 合成下列物质需要供给氮院的是：糖原/脂肪/核酸/淀粉 they were amazed to find that the goddess turned out to be a very morden looking momanamzed是 形容词 to find that the goddess turned out to be a very morden looking moman在句中是什么什么成分 they were amazed to find that the goddess turned out to be a very modern looking woman1 这句话的they were amazed to find 是被动语态吗?还是说amazed是形容词?2 the goddess turned out to be a very modern looking woman 这里为什么要 they were amazed to find that the goddess turned out to be a very morden looking moman 是宾语从句么 they were amazed to find that the goddess turned out to be a very morden looking woman为什么是turned out to be 为什么加个be .直接写成turned out to a very morden looking woman.错在哪里 One e___two young men were walking in the street together.They tried to find a c____to steal somethThe clock struck twelve.Most of the people went to bed.Quickly they came to a house and it seemedthat everyone in the house had falled a___.Standing at 石英矿石 沙子 请问应如何取到二氧化硅? 家庭消防应急预案,五六百字的 白钨矿,钨矿是怎样选矿的?粉状的钨有什么好的选矿方法吗? 硫酸铜能应用在钨矿的选矿或者冶炼上吗?希望能回答的详细一点,使用情况是否像铅锌矿浮选一样?听一些公司说是白钨矿浮选不用硫酸铜,只是用硫酸铜脱硫, 钨矿选矿设备所需要的速度是多少 钨矿一度是什么意思 汉译英1我们每晚应当拥有至少八个小时的睡眠.we should have-----a night.2他好像没有很多朋友. 英语翻译No one should allow himself to be emotionally abused by anyone else.But over the course of a friendship,even the best people make mistakes. 已知氯元素的相对原子质量为35.5 ,由Na23 Cl35 Cl37构成的11.7克NaCl晶体中 含Cl35多少克?含Na37Cl多少 福建省 泉州港的区位优势?自然区位条件?地理位置?社会经济?快一点,好的加分! 天津港不利的区位条件是什么?它有冰期吗?如题.我在资料书上看的不利条件有的是泥沙淤积,有的是结冰.有的说不结冰?请分析, 关于湛江钢铁工业基地的地理位置和区位优势 安庆的自然区位优势 田纳西河流域开发的区位优势（自然背景）是什么? have at least eingt hours'sleep 的同义句