问题
单项选择题
线路输出与给定值无反馈关系的调节系统称（）。
A、开环调节
B、闭环调节
C、单闭环调节
D、双闭环调节
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
线路输出与给定值无反馈关系的调节系统称（）。
A、开环调节
B、闭环调节
C、单闭环调节
D、双闭环调节
参考答案：A
| 用方框中所给单词或词组的适当形式填空，每个词只能用一次。 | |
| |
| 1. You should eat more ________ and less sugar to keep healthy. 2. There are a lot of new words in the ________ lesson. 3. My sister thinks gymnastics is ________ than running, so she doesn’t like it. 4. There are lots of________ to Mount Tai every year. 5. Look, Tony enjoys ________ of all the beautiful things. |