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

ठोस कचरे का निस्तारण नहीं होने से क्या हो सकता है?

1
मलेरिया
2
आंत्र ज्वर
3
प्लेग
4
पेचिश
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