engineering recuitment BPSC Assistant Sanitary & Waste Management Officer Mock Test 2022 Environmental Engineering Solid Waste Management

नगरपालिका ठोस अपशिष्ट खाद में अधिकतम C/N अनुपात _____ होता है।

1
10:1
2
20:1
3
30:1
4
40:1
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