Hiring managers often conclude job interviews by giving the candidate a chance to ask them questions. While you may be tempted to skip this part and run for the exist, it would be a terrible mistake. Take full advantage of this opportunity. A few recommendations:
Why is this position open?
What do you expect me to accomplish in the first 90 days?
Are there opportunities for additional training and education?
What do you enjoy most about working here?
How is performance measured in this role?