A na-ekewa nha akwụkwọ mpempe akwụkwọ nchara nchara n’ime ụkpụrụ atọ, A, B, C, ma nwee ezigbo mkpuchi ụda yana arụmọrụ mkpuchi ọkụ. Enwere ike ịnye ọnụ ụzọ ọkụ ígwè na windo, mkpuchi, mkpuchi ventilashion, wdg dị ka achọrọ. Nnọọ ịkpọtụrụ anyị.

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