how to select temp table

ver 8.4
i create two table with same name  named 'testtable'

one is temp table

 

 i select * from testtable
then this table is a public  or a temp ???
drop table testtable 

then is this table a public or a temp? i test ,it drop temp table fisrst!

so am i  must show  public or pg_temp_1  when i has two table with same name !!!