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璩茗怡2907...语文成绩公布前,他五门功课的平均分数是93分;语文成绩公布后,他的总平均分下降了2分.小李语文考了多少分?2.育才小学六年级同学的平均身高是... -
童梵章15140627942 ______[答案] 1. 前五门总分 93*5=465 分 六门总分: (93-2)*6=546 分 ∴语文是 546-465=81 分2.解 总身高 141.4*(22+18)=5656 cm 男生总身高 140.5*22=3091 cm ∴女生总身高 5656-3091=2565 cm ∴女生平均身高为 2565/18=...

璩茗怡2907世界上最粗的树是百骑大栗树它生长在地中海西西里岛的埃特纳火山的山坡上,树干一周的长度达55.45米,大约多少个身高1.7米的成年人伸开双臂才能围住... -
童梵章15140627942 ______[答案] 55.45/1.7=32.6 33

璩茗怡2907经 专家研究一个正常人总血量约占体重的2/25,每次献血只要不超过总血量的1/10,对身体就没有任何影响.一个人体重60千克,一次献血400毫升会影响他的... -
童梵章15140627942 ______[答案] 你好,60*1000*2/25/10=480,400<480,所以对身体就没有任何影响.希望回答对你有用并祝你天天健康快乐!

璩茗怡2907下列估测经验最接近实际的是( ) -
童梵章15140627942 ______[选项] A. 乒乓球台高约为760cm B. 一元硬币的质量约为50g C. 成年人正常行走1.2m用时约1s D. 近几年石家庄冬季平均气温约10°C

璩茗怡2907...已知甲、乙两人的平均体重是40千克,乙、丙两人的平均体重是44千克,甲、丙两人的平均体重是42千克,问甲、乙、丙三人的平均体重是多少千克? -
童梵章15140627942 ______[答案] 甲、乙两人的平均体重是40千克 所以甲和乙一起的体重是80千克 乙、丙两人的平均体重是44千克 所以丙和乙一起的体重是88千克 甲、丙两人的平均体重是42千克 所以丙和甲一起的体重是84千克 将3个式子相加 2(甲+乙+丙)=252千克 所以甲+乙...

璩茗怡2907...里面水深度为30厘米,当人用力F竖直向上提水桶时,水桶对地的压强与水对水桶的压强相等,此时人对地的压强为1.6X10的4次方Pa求人的拉力F为多少?... -
童梵章15140627942 ______[答案] 能啊,就是按你说的做的啊

璩茗怡2907短文中里的中指给你留下来什么印象?,生活中你见过类似中指的这样的人吗?五指中地位最优、相貌最堂皇的,无如中指.他居于中央,左右都有屏障,他... -
童梵章15140627942 ______[答案] 给我留下了养尊处优、高傲的印象.有些贵妇人就是这样,每天生活在很好的环境中,却不用做什么. 这个我们老师讲的,我写是算对的,.