Personnel engaged in the teaching work of training institutions authorized by training institutions and employed according to the management procedures of training institutions. According to the relevant public information, the holders of the current valid civil aircraft maintenance personnel license (Class TA) have more than five years of first-line aircraft maintenance experience corresponding to professional aircraft, among which B737 aircraft dispatchers are preferred, with certain English ability, and the holders of English level certificates such as English level 3, 4 and 6 of maintenance license are preferred, with strong language organization and expression skills. Able to write lesson plans and work cards, experience in teaching and training is preferred. 147 (English: RyanModel 147) is a military unmanned aerial vehicle, which was developed from a Ryan Firebird (English: RyanFirebee) unmanned aerial vehicle by Rennes Airlines into a long-range unmanned reconnaissance aircraft. 196 1 started production, and the derivative series was retired after 2003.