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
!!!