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单选题
The schematic diagrams should include generators, tanks, and reservoirs that are considered to be the starting points of the flow shown. The diagram shall be arranged so that the flow of the system can be traced with a minimum of effort. Cross-overs shall be avoided as much as possible.
A
A.系统示意图应包括被视为流程起点的发电机、油箱和液压油箱等。部件的布置应使系统的流程追踪起来最不费力。尽量避免纵横交错。
B
B.系统流程图应包括发电机、油箱或液压油箱等。示意图的布局应使部件追踪毫不费力。尽量避免管道交叉。
C
C.系统流程图应以发电机、油箱或液压油箱等作为流程起点。示意图的布局应使对流程分析毫不费力。尽量避免线路交叉。
答案解析
正确答案：A
相关知识点：
系统图含起点，布局避交叉
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