以下（）属于包装标志。
A.运输标志
B.条形码
C.指示性标志
D.警告性标志
参考答案：A, C, D
企业要增加产销率通常会在MCMP方面（即原料、能力、市场和政策）想办法。
Which statement is TRUE when comparing cold and warm fronts?（）
A.Cold fronts are more violent and of shorter duration
B.Cold fronts are milder and last longer
C.They are very similar with the exception of wind direction
D.Warm fronts are more violent and of longer duration
