First, design a retrieval topic related to this major, including at least two topics. Tips: You can't repeat the self-made questions with other students. If the topic is repeated, the test paper will be returned for redoing or failing. )

Title: Search the research literature of automobile braking system failure.

(For example, search for documents about research and development of 3D virtual model base of mechanical drawing)

1. Use CNKI database, Chongqing Weipu periodical database or Wanfang data resource system to search academic papers closely related to the subject, write search terms and search formulas (search formulas include search terms, search paths and logical relationships between search terms), find out the number of results, and save the title list of three records. (10)

Selected retrieval tool: advanced retrieval of CNKI database

Keywords: automobile braking system failure

Search formula: SU= car, SU= brake system, SU= fault (such as title = computer * title = image * title = treatment).

Other search restrictions (such as ambiguity, accuracy, time, etc. ) fuzzy time is not limited. Number of results detected: 447 and three records:

A fat Xin Lei. Comprehensive fault diagnosis and elimination of automobile braking system [J]. Road and automobile transportation in 2007

B. Zhou Xiaoyan. Fault analysis of insufficient braking force of automobile hydraulic braking system [J]. Automobile maintenance and repair, 2007c. Zhang Junxia; Wang Wei. Structure and fault diagnosis method of automobile ABS braking system [J]. Shijiazhuang occupation