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一根长47,1米的绳子正好绕一个木桩30圈,这个圆形木桩的直径是多少米? 甲比乙多1/4,乙比甲少1/4, 甲比乙少1/4,乙比甲多（） 如果甲比乙多4分之1,那么乙就比甲少5分之1.这个说法对吗?``````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````` 甲比乙多1/4,乙比甲少（ ）% 金山卫士悬浮窗 不显示温度 右击悬浮窗 也没有像是硬件温度选项 硬件检测能看到硬件温度我想要硬件温度显示在悬浮窗上 两台采样器同时测大气中悬浮颗粒,它们之间距离为多少 一个圆空地、直径5米、中间定着个木桩,木桩上拴着一根绳子、绳子长4.5米、里面有一只羊、、、请问羊怎么才能吃到空地外面的草 一根圆木桩横截面直径是15厘米,一根绳子绕木桩4圈后还剩3cm,绳子长（ ）cm.A 228.4 B 57.1 ...选择题一根圆木桩横截面直径是15厘米,一根绳子绕木桩4圈后还剩3cm,绳子长（ ）cm.A 228.4B 57.1C 231.4D 65. 甲是乙的5分之4谁多? ? ? ? 刚玉算不算固溶胶(彩色） 为什么我做的二氧化钛溶胶不是无色?我的课题需要用溶胶凝胶法制备无色透明二氧化钛溶胶,用的钛酸丁酯来做,钛酸丁酯本身就是淡黄色,怎么得到无色的二氧化钛溶胶呢? 电泳时溶胶上升界面与下降界面的颜色 清晰程度及移动速度有什么不同 怎样让铜颗粒悬浮铜的粒径50um左右 计算25度时,AgI/Ag的标准电动势,已知,Ag+/Ag=0.7986 个人能做什么对辩论协会有益的事? please don t walk awayk 反应中如果有沉淀,那物质的量浓度怎么算 浓度达到多少算完全沉淀? 反应后有沉淀时量浓度的体积前后变化吗反应后有沉淀时计算量浓度溶液体积会减少吗 he is one of the America's most beloved poets Beloved be less than fair to my meeting all one's life kind with you well on track to China's trade surplus in the first eight months of 2006 hit 95.7 billion dollars,well on track to bust last year's record of 101.9 billion dollars. 《给西部小朋友的的一封信》我是福州人 R D department什么意思 Dear everyone in R&D department是什么意思 (2/3)th ,offer to ,take a trip ._____,singapore is a nice place (2/3)e...with ,offer to ,take a trip 1.if i had money ,i would ____ a 细胞中是什么样的机制控制dna转录出某一时刻该细胞所需要的rna-蛋白质? 20.Look,Lily is on（ ）trackA.fiveB.the fiveC.fifthD.the fifth 求首歌Ian Brown的on track麻烦有知道哪有的朋友说下地址 啥是ON TRACK