所谓简单控制系统,通常是指由一个测量元件、一个变送器、一个控制器、一个控制阀和一个控 发布时间:2019-07-26 10:50 │ 来源:www.tikuol.com 题型:单项选择题 问题: 所谓简单控制系统,通常是指由一个测量元件、一个变送器、一个控制器、一个控制阀和一个控制对象所构成的()控制系统。A、单开环B、单闭环C、双开环D、双闭环
题型:单项选择题 — What _____ do you like? — I run every morning, and often play tennis at weekends. [ ]A. sports B. music C. art D. subjects 查看答案
题型:单项选择题 —What did you talk about just now?—My father asked me ___________.A.whom I was going to Shanghai withB.where am I with my friendsC.when would I go homeD.if I have finished my homework 查看答案