1. PMI官方网站：https://www.pmi.org/
2. PM PrepCast：https://www.project-management-prepcast.com/pmp-exam/the-pmp-exam
3. PM Study：https://www.pmstudy.com/pmp-exam-questions/
4. Oliver Lehmann：https://www.oliverlehmann.com/pmp-self-test/75-free-questions.htm
5. Simplilearn：https://www.simplilearn.com/pmp-exam-prep-free-practice-test
6. Exam Central：https://www.examcentral.net/pmp/pmp-exam-questions
7. PMP Exam Simulator：https://www.pm-exam-simulator.com/pmp-exam-simulator-free/
8. Head First Labs：https://www.headfirstlabs.com/PMP/free_exam/
9. Udemy：https://www.udemy.com/topic/pmp-exam/
10. Whizlabs：https://www.whizlabs.com/pmp-certification-training-online-free/
11. Project Management Academy: https://projectmanagementacademy.net/pmp-practice-exam-questions
12. Edwel Programs: https://www.edwel.com/Free-Resources/PMP-Practice-Exam.aspx
13. PM Zilla: https://www.pmzilla.com/pmp-exam-questions
14. PMP For Sure: https://www.pmpforsure.com/pmp-exam-questions
15. PMP Exam Prep Online: https://www.pmpexampreponline.com/free-pmp-exam-questions/
16. PM Aspire: https://www.pmaspire.com/pmp-exam-questions
17. PM Training: https://www.pmtraining.com/pmp-exam-prep/free-pmp-practice-exam
18. PMP Master Prep: https://www.pmpmasterprep.com/free-pmp-exam-questions/
19. PMP Exam Practice Test: https://www.pmpexamsimulator.com/pmp-exam-practice-test/
20. PMP Exam Guru: https://www.pmexamguru.com/pmp-exam-questions
这些网站提供了大量的PMP考试试题和模拟考试，可以帮助考生更好地准备PMP考试。
