【Weekly 3 Questions, Question 18】2017.09.19

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By replying to bg9.png, you can see the answers to the previous question. (Single-choice question) The purpose of introducing differential action is ( ). A. To eliminate residual errors B. To reduce high-frequency interference C. To improve the regulation quality of high-order systems D. To enhance the stability of the system. The answer is C. The questions for this session are as follows: (Multiple-choice question) When selecting the I/O components for a programmable controller, the following factors need to be considered: A. System scale； Requirements for parameter B ； C Signal Types ； System requirements for D. —————————————————————————————————————————————————————————————— Scoring criteria: 2 Wealth points for incorrect attempts; 3–6 points for *incomplete* answers; 8 Wealth points for correct answers with detailed explanations; 10–15 Wealth points for correct answers along with supplementary *answers*. Please score according to these criteria. Note: If there are editing records after answering, only those who participated will be credited points. For continuous malicious spamming, 2 points will be deducted each time, with no upper limit. Pure numbers, pure emojis, or random letters that have nothing to do with the answer are all considered malicious spamming; points will start to be deducted after three warnings