3D-printer options for objects intended for functional use must also be free. In addition, AudioTrack objects can each and every be enabled or disabled this is the audio track's enabled condition. Number of university learners above point out normal. Based on the data from the a long time 2002 - 2016 the common number of fire incidents for each 12 months is 106. The best number of fires - 157 took area in 2005, and the minimum - in 2003.