题目内容

RFID是指

A. 电子数据交换
B. 条形码技术
C. 无线射频技术
D. 仓储管理系统

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在产品规划布置上将产品分为A、B、C三类的依据是

A. 出货频率
B. 库存总量
C. 资金占用
D. 包装形式

Water content of soil can

A. never be greater than 100 %
B. take values only from 0 % to 100 %
C. be less than 0 %
D. be greater than 100 %

Which of the following statements is correct?

A. Uniformity coefficient represents the shape of the particle size distribution curve.
B. For a well graded soil, both uniformity coefficient and coefficient of curvature are nearly unity.
C. A soil is said to be well graded if it has most of the particles of about the same size
D. None of the above

Uniformity coefficient of a soil is

A. always less than 1
B. always equal to 1
C. equal to or less than 1
D. equal to or greater than 1

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