how to extend the current selection to ajacent faces ?

 From:  hadri1
11860.1 
hi,

Sometimes when i get bad step files to clean up, there are a lot of very small surfaces.
In order to select it faster than rectangle selection, is it possible to extend the current face selection to ajacent faces ?

Best regards.

Hadrien

the picture attached is not a complex surface, just an example where i would like to extend selection to adjacent faces.
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