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食品为什么要离地十公分

来源:baiyundou.net   日期:2024-08-27
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谈天种956一尺等于多少厘米 -
冶姚忠18632843166 ______ 1尺=33.3333333厘米 尺,是一种长度单位,中国叫“市尺”(现代三尺等于一米).一尺等于十寸. 厘米是一个长度计量单位,等于一米的百分之一.英语符号即缩写为:cm. 扩展资料: 尺是古今都有的,是中国市制长度单位(亦称“市尺”.一尺等于十寸.)西汉时一尺等于0.231米,今三尺等于一米. 长度单位的国际单位是“米”(符号“m”),常用单位有毫米(mm)、厘米(cm)、分米(dm)、千米(km)、米(m)、微米(μm)、纳米(nm)等等.长度单位在各个领域都有重要的作用. 参考资料:尺-搜狗百科

谈天种956防灾减灾的知识急!!!!!!! -
冶姚忠18632843166 ______ 《守护生命十大黄金法则》 人生命,要守护,十条法则要记住,一旦灾害发...

谈天种956纸烧后吹熄的烟在距离地面10CM时烟会乱飘,移动到距离地面100CM时为什么比较平静,会直直地飘上去! -
冶姚忠18632843166 ______ 跟烟的温度有关!众所周知,烟为什么会往上漂是因为它的温度比周围空气的温度高!温度高密度就低,密度低就会往上漂!就如同水的浮力!比水密度小的物体会浮在水面!比水密度大的会沉底!而刚开始冒出的烟温度较高!会和周围的比它温度低的空气强对流!所以会乱飘!而随之温度慢慢降低!空气扰动也会随之变小!所以会变得平静!呵呵

谈天种956为什么离地面150厘米才能测出湿度 -
冶姚忠18632843166 ______ 测空气湿度当然要离地面一段距离.测湿度是为了人的生存,人一般在150cm以上

谈天种956食品厂的工人要将长三十厘米宽二十厘米高十厘米的长方体饼干盒装入棱长四十厘的正方体纸箱,最多能装几 -
冶姚忠18632843166 ______ 40除以30=1(个)......10(厘米)40除以20=2(个)40除以10=4(个)4乘2+2=10(盒)

谈天种956一个长方体食品盒,长二十厘米,宽十五厘米,高三十厘米,这个食品盒的容积有多少立方厘米?要在食品盒的 -
冶姚忠18632843166 ______ 容积是:20✘15✘30=9000立方厘米

谈天种956一个长方体的食品盒,长25cm,宽15cm ,高10cm,这个食品盒的表面积是多少平方厘米; -
冶姚忠18632843166 ______ (25*15+25*10+15*10)*2=775*2=1550平方厘米

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