Jawapan

2016-08-03T19:59:43+08:00
1.reservoir
2.water treatment plant:coagulation,chlorination,sedimentation,filtration,flouridation
1 5 1
tq..
sama2 maaf saya x tahu BM version..
yang *plant* tu utk ape?
loji?pelan?tak pasti maaf ya
ouhh...sokey