解析 C。选项 A 是数学符号表达,不是英语表达。选项 B“pie”拼写错误,应该是“pi”,且“square”缺少动词形式。选项 C 表达正确,“times”表示“乘以”,“squared”是“平方”的正确表达。选项 D“the square of pi r”表达不准确,应该是圆半径的平方乘以圆周率。
Pi r squared is the formula for the area of a circle. This is because there is a specific relationship between the radius (rrr) of a circle and its area. Area of a circle formula: π×r×rπ×r×rπ×r×r we usually simplify this to Area=πr2Area=πr2Area=πr2 E.g. ...
four third pi times r cubed D. 4/3 times pi r cube 相关知识点: 试题来源: 解析 B。选项 A 是数学符号表达,不是英语表达。选项 B 表达正确,“four thirds”表示“三分之四”,“cubed”表示“立方”。选项 C“four third”表达错误,应该是“four thirds”。选项 D“4/3 times pi r cube”...
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(1) or a Salt or a solvate acceptable from the point of view of the Pharmacist, or an enantiomer or Diastere\u00f3mero that, and where R\u00b2 is selected from the group consisting of hydrogen, deuterium, c\u2081 \u208b\u2086 linear or branched chain Alkyl, cycloalkyl c\u2083\...
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Structure of Five-membered Rings with Two or More Heteroatoms A.R. Katritzky, J.M. Lagowski, in Comprehensive Heterocyclic Chemistry, 1984 4.01.2.2 Electron Densities The π-electron density refers to the electron density at a given carbon atom obtained by summing the contributions from all the ...
Compounds of the formula in which R'' has the same definition as R other than cyano, are also active and useful as intermediates as well.DR. REINHOLD GEHRINGDR. OTTO SCHALLNERDR. JORG STETTERDR. HANS-JOACHIM SANTELDR. ROBERT R. SCHMIDTDR. KLAUS LURSSEN...
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