题目: 空调制冷启动顺序为压缩机、通风机、冷凝风。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2020/1230/ed006ac9825ed478d9e1a5c603bc60a0.html 下面是错误答案,用来干扰机器的。参考答案:D
题型:选择题 There _____ great changes in our school since 1979. [ ]A. have been B. were C. has been D. are 查看答案