Questões de Língua Inglesa do ano 2013

make projects heavier than conventional materials.

demand more steel to be safer.

have just been banned from the aircrafts.

are unreliable due to their hybrid structure.

require more accurate checks in aircraft parts.

the advantage of creating an end product.

the possibility of increasing contamination levels.

a skepticism about the process efficiency.

the amount of solutions for better sewage treatment.

aumentam a proliferação de bactérias.

controlam a filtragem do processo.

desaparecem com a presença de muito líquido.

surgem após a decomposição estar completa.

ajudam no processo de compostagem.

achieve a safe sewage system for urban centers.

find a way to decompose human waste without filtration.

create new organisms to combat aerobic bacteria.

block the filtration during the sewage contamination.

accelerate the decomposition process in pit latrines.

issues are being avoided by researchers.

relies on developing countries’ hygiene habits.

still harms lots of poor children.

lacks initiatives from problem-solvers.

has been reduced in Singapore.