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【单选题】
已知一美细绒品种粗纱定量为5.2g/10m，捻度1.44T/in，求号数制捻系数是（）
A.
129
B.
1293
C.
276
D.
32.84
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Part ADirections: Read the following four texts．Answer the questions below each text by choosing A, B, C or D．(40 points)The long year of food shortage in this country have suddenly given way to appar...
A.
The abundant food supply is not expected to last
B.
Britain is importing less food
C.
Despite the abundance, food prices keep rising
D.
Britain will cut back on its production of food
【单选题】甲组变异系数为3.59%,乙组变异系数为4.89%说明( )
A.
说明甲组比乙组变异程度大
B.
此时不能说明哪一组变异程度大,要经过显著性检验
C.
说明乙组比甲组变异程度大
D.
说明甲组的均数比乙组小
E.
不能说明任何问题