Does the Piper Aztec have flaps and slats and if so what kind?
The Piper Aztec has standard (plain) flaps:


Source: Sky4Buy.com

Another View:


Source: Same as above

The Aztec does not have slats as can be seen in the image from the front of the wing:


Source: NWAviators.com

Here is a close-up view of the wing of the plane in the first two images (damaged, but no slats):


Source: Sky4Buy.com

Other than the flaps (and wings) there are no other high-lift devices installed on a Piper Aztec.