国产天然气氨压缩浅冷装置制冷系统氨压缩机排气压力应为()MPa。
A.0.4~0.8
B.0.8~1.5
C.1.5~2.8
D.2.8~3.4
参考答案:B
国产天然气氨压缩浅冷装置制冷系统氨压缩机排气压力应为()MPa。
A.0.4~0.8
B.0.8~1.5
C.1.5~2.8
D.2.8~3.4
参考答案:B
完形填空。 | |||
My son Joey was born with club feet (畸形足) . The doctors told us that with ___1___ he would | |||
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