Environment & Ecology · Environmental Engineering
एक पारंपरिक ग्रिट चैंबर के भीतर सीवेज प्रवाह के लिए प्रदान की जाने वाली सामान्य रोक अवधि (detention period) कितनी होती है?
- 15 से 10 मिनट
- 210 से 45 सेकंड
- 3100 से 150 सेकंड
- 445 से 90 सेकंड✓
सही उत्तर देखें
45 से 90 सेकंड
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