不用硅胶作干燥剂的是采用()制冷剂的制冷装置。A.R22 B.R134a C.R40 发布时间:2017-06-22 00:47 │ 来源:www.tikuol.com 题型:单项选择题 问题: 不用硅胶作干燥剂的是采用()制冷剂的制冷装置。A.R22B.R134aC.R404AD.B和C
题型:单项选择题 Mother's Day is coming. And I'll buy a specialfor my mother.A.presentB.parentC.protectD.provide 查看答案