15C4 B
 Which of the following service or maintenance functions may NOT be performed by the holder of a GMDSS Radio Operator License?
A. Reset tripped circuit breakers or replace defective fuses.
B. Any adjustments or maintenance that may affect the proper operation of the station.
C. Routine battery maintenance if used as part of the GMDSS station.
D. Replacement of consumable items such as paper, ribbons, etc.
