Barcode tracking systems are replacing paper based manual methods.
A. 条形码跟踪系统正在取代基于纸张的人工方法。
B. 条形码跟踪系统正在取代基于纸张的机械方法。
C. 条形码跟踪系统正在取代基于纸张的手工方法。
The exterior package is designed to appeal to and inform the final customer.
A. 对
B. 错
The customer may never see customer package.
A. 对
B. 错
Short distances or in inaccessible places helicopters can be used.
A. 对
B. 错
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