Be aggressive in seeking out learning opportunities! If you do not know something, do not hesitate to make it clear. The key is to focus on what you will learn, not what you do not know! I have always appreciated students that were confident and assertive as these tend to be more reliable. Even if they don't know all the answers I can trust they will find the needed information. Finally, have a "whatever it takes" attitude. Do not focus on what is wrong or out of the typical routine, focus on solutions to any situation you come upon.