【判断题】
PROFIBUS 一 DP 可取代 DC24V 或 4 ~20mA 信号传输。
A. 对
B. 错
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答案
A
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【判断题】
调研的任务是对设计目标及实现目标所要解决的各种问题，进行深人和全面的了解，分析需求的性质与特点，分析解决问题的途径及技术关键，并对获取的信息进行加工和整理，以确定设计时需努力的重点和方向。
A. 对
B. 错
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