In your case, I suggest you

来源: 于 2005-08-31 14:39:45 [旧帖] [给我悄悄话] 本文已被阅读：次

to make an appointment first. For me, I happened to be there and the Pitt*****urgh office was not that busy. But gnerally speaking, the people there are very friendly, you can always try.