A system, method, and apparatus for detecting wear in a screening arrangement is disclosed. Further, a ceramic heater capable of uniform resin curing is provided. The firmware is also coupled to and configured to control a charge switch. The branch portion has a second outflow direction along which fuel is to flow from the branch portion into the second connecting pipe. The one of the source electrode and the drain electrode on the second p-type semiconductor layer includes: a first metal film; and a second metal film Which contacts the first metal film on the gate electrode side of the first metal film, and a resistance of which is higher than that of the first metal film.