This depends to what exactly you are refering too. However it could be, close coupled for a toilet unit and cxc is code for compression fittings.
CC mean "CENTER TO CENTER"
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Female Iron Pipe Thread
well i really dunno, but in schools its means physical education. (gym class)
cc
Traditionally, Iron Pipe Size, but can also mean that it has male pipe threads (threads on the outside of the pipe).
SWT: This stands for "sweat", which is another term for "solder" (typically used to join copper pipes).
cc:
Cc in plumbing refers to the measurement from one object to another. Since plumbing is round the measurements are taken from "center to center".
DRZ is not an acronym that is used in the plumbing industry so it does not stand for anything. DFU in plumbing means drainage fixture unit.
CC stands for Carsten Charles.
The CC in Volkswagen CC stands for "Comfort Coupe".
Cubic Centimeters
None. Perhaps one is preferred, but both are used commonly.