Abstract.A small four-rotor UAV transmission line inspection system is designed, which not only can cruise and avoid obstacles automatically, but also can be controlled with the remote. The system carries out data collection of transmission lines by the camera module, makes use of FPV technology to realize the image transmission in real time, with high-performance controller STM32F40ZGT6 as the control core, using a small four-rotor UAV to achieve autonomous cruise. The test results show that the transmission line inspection system can accomplish the task of the patrol line perfectly, and the function of the autonomous patrol line can reduces the labor cost greatly.

Nowadays, English elective course setting is not consistent with the actual needs of the students, which results that students can not receive general English education to solve professional problems. This article aims to study the Curriculum Setting Management of college English ESP elective courses based on demand theory and thus provide a better learning management environment.

Abstract. Nowadays, spoken English teaching in China on the improvement of students' oral ability does not meet the expectation. "Dumb English" is still prominent in English-language learners. This paper develops a research using questionnaire survey on students' spoken abilities and needs. An efficient curriculum setting is put forward by combining chunk theory with input and output strategies. It consists of accumulative input, collaborative dialogue and automatic output. As the desired outcome of the curriculum setting, the automaticity in the third part can facilitate the fluency of learners' spoken English.