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单选题
为了方便排故、修理电路、更换部件，需要采用部件定位和线路的编码系统。
A
To facilitate troubleshooting, repair of circuits, and replacement of components, component locator and coding system should be used.
B
To facilitate modification, repair of lines, and replacement of components, component identification and coding system should be used.
C
To facilitate overhaul, repair of wirings, and replacement of components, component designation and coding system should be used.
答案解析
正确答案：A
