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单选题
The diagram shall be arranged so that the flow of the system can be traced with a minimum of effort.
A
The flow of the system can be traced as easily as possible through the arrangement of the diagram.
B
A reasonable distribution of the diagram helps to duplicate the flow of the system with least difficulties.
C
The diagram shall be arranged in order to draw a minimum flow of the system without effort.
答案解析
正确答案：A
