Give two (2) advantages of separate system of drainage. – NABTEB QUESTION by Sunday | Sep 22 | NABTEB QUESTIONS | 0 comments ANSWER: (i) Reduction in the cost of pumping/evacuation (ii) Reduction in the cost of sewage treatment Users Also Read These:Name THREE important alloys of aluminium. ii. Give…State TWO advantages of super heterodyne radio…List two advantages of rendering. - NABTEB QUESTIONWhat two advantages do cavity walls have over solid…State TWO advantages of multi-drive axle - NABTEB QUESTION