制冷系统高压侧压力过高,,并且膨胀阀发出噪声,说明()。A、系统中有空气 B、系统中 发布时间:2017-07-08 15:48 │ 来源:www.tikuol.com 题型:单项选择题 问题: 制冷系统高压侧压力过高,,并且膨胀阀发出噪声,说明()。A、系统中有空气B、系统中有水汽C、制冷剂不足D、干燥灌堵塞
题型:单项选择题 — You all like your English teacher?— Yeah, she devotes herself____ to teaching and it earns her a good reputation. [ ]A. originally B. extremely C. obviously D. entirely 查看答案