Computer · Sewage Treatment
एक सीवेज उपचार संयंत्र (sewage treatment plant) के लिए आमतौर पर विचार की जाने वाली प्रारंभिक डिज़ाइन अवधि कितनी होती है?
- 150 से 10 वर्ष
- 210 से 15 वर्ष✓
- 320 से 25 वर्ष
- 425 से 30 वर्ष
सही उत्तर देखें
10 से 15 वर्ष
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