One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 408
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Fill-in-the-blank: The vapor temperature control of the VC aftercooler must be kept above （） to prevent liquefaction, and the compressor oil pressure should be controlled at （）。 Answers: greater than 45 degrees, 0.1～0.15MPA
＞ 45 ℃ 0.1-0.15 MPa
Control of the vapor phase temperature of the VC cooler at the back of the machine (>47°C) prevents liquefaction; the compressor oil pressure should be maintained within the range of (0.1–0.15 MPa)
Control of the vapor phase temperature of the VC cooler at the back of the machine (>45°C) prevents liquefaction; the compressor oil pressure should be maintained within the range of (0.1–0.15 MPa)
>45℃;0.1~0.15Mpa
＞47 degrees-----0.1-0.15MPa
＜75℃； 0.1—0.3MPa
Control of the vapor phase temperature of the VC cooler at the back of the machine (>47°C) prevents liquefaction; the compressor oil pressure should be maintained between (0.1–0.15 MPa).
＞47℃ 0.1--0.15Mpa