Pergunta de entrevista da empresa SLB

Why are man-hole covers round?

Respostas da entrevista

Sigiloso

18 de dez. de 2010

So they can't fall into the hole.

1

Sigiloso

12 de jan. de 2011

The hole is round. A non-round cover wouldn't fit

Sigiloso

10 de fev. de 2011

I've seen square manholes covers