电子电气英语【电子电气员】题库 单选题 1分 When steam is being raised on a boiler, the water level will normally ______. A. drop as the boiler warms up B. rise as the boiler warms up C. remain unchanged until the boiler is hot enough D. rise and fall with the steam demand 点击查看答案 进入题库练习 参考答案: B 你可能感兴趣的试题 1 单选题 1分 ______, which consists of proportional, integral and derivative elements, is widely used in feedback control of industrial processes. A. PID controller B. PI controller C. P controller D. PD controller 点击查看答案 2 单选题 1分 NAKAKITA fuel viscosity control system in accordance with the principles of ______, and achieve ______.. A. force equilibrium displacement,PI control B. moment equilibrium PD control C. force equilibrium,PID control D. displacement equilibrium ,PID control 点击查看答案 3 单选题 1分 The______ preparing start is restart in the AC-4 system. A. 1st B. 2end C. 3ird D. B+C 点击查看答案 4 单选题 1分 The electric actuator of the DGS 8800e digital adjustable-speed control system consists of ______. A. servo drivers B. slow down devices C. DC motor D. servo motor 点击查看答案 5 单选题 1分 The actuator position feedback is to control ______in DGS8800e digital adjustable-speed control system. A. the angular of servo driver B. the angular of servo motor C. the speed of servo motor D. the position of servo motor 点击查看答案