The difficulty of fluid mechanics course in Chang 'an University generally depends on many factors, such as course setting, teaching quality, examination difficulty and so on. Generally speaking, fluid mechanics is a relatively comprehensive discipline, which requires a deeper understanding and mastery of mathematics, physics and other disciplines. Fluid mechanics usually requires complex formulas involving calculus, partial differential equations and vectors. These mathematical tools may be difficult to understand, and students need to do a lot of formula derivation and mathematical exercises according to the curriculum requirements.

Whether the exam is easy or not depends not only on the learning ability and attitude, but also on whether the resources provided by the school are used properly and whether the students participate in course counseling and practice. If you need more detailed information, it is recommended to consult the Academic Affairs Office of Chang 'an University or related teachers.