Nevada County Consolidated Fire District officials have a question to which they're hoping registered voters in the district will say "yes."Are they willing to approve an annual special tax - over and above property taxes and a special assessment levied in 2004 - to maintain the current level of fire department services?The proposed special tax would increase the yearly assessment by $52 per residential parcel, $39 for second dwelling units and mobile homes, $26 for unimproved vacant/timber or agricultural land, and $.04 per square foot of commercial/office/industrial space. The special tax requires 67 percent approval from voters.Fire Chief Tim Fike …