Pergunta de entrevista da empresa SLB

Why are manhole covers round?

Respostas da entrevista

Sigiloso

13 de nov. de 2011

it's so that they cant be dropped through the hole

11

Sigiloso

12 de nov. de 2011

so they dont have to be rotated or lined up to be replaced

3

Sigiloso

8 de mar. de 2012

if it's round there are no sharp edges to deal with

1