下列几种甘醇中,作为天然气脱水应用最广泛的是()。
A、EG
B、DEG
C、TEG
D、TREG
参考答案:C
There’s ______ orange in your bottle than in mine. I can give you some. [ ]
A. fewer
B. more
C. less
D. smaller
蒸发器修复后,应进行气密性试验,R22蒸发器的试验压力应为()。
A.0.6MPa
B.0.9MPa
C.1.2MPa
D.1.5MPa