搜题请搜索小程序“爱下问搜题”
问题
问答题 简答题
什么叫设定值？
答案
参考答案：
被控变量的预定值。
选择题
Tom _____ in the library every night over the last three months.
A. works
B. worked
C. has been working
D. had been working
查看答案
问答题 简答题
在电气化铁路上严禁哪些作业？
查看答案
