输油泵变频控制系统可以根据缓冲罐(),调整输油泵运行频率,实现连续输油。 A.进油速 发布时间:2019-01-11 06:46 │ 来源:www.tikuol.com 题型:单项选择题 问题: 输油泵变频控制系统可以根据缓冲罐(),调整输油泵运行频率,实现连续输油。A.进油速度B.液位信号C.液位报警装置D.压力
题型:单项选择题 Most museums are just for looking. But today some of them have things for you to touch.The __say,“__”A.signs; Do touchB.notices; To touchC.signals; Be touchingD.signs; No touching 查看答案