In the process of preparing for the securities qualification examination, it is very important to do the questions. Especially half a month before the exam, it is a common choice for many candidates to use the sea tactics. Then the question is coming. What APP software can brush the securities business topic? Which is better for the securities industry to use APP? Download 233 online school APP, securities business simulation test questions, chapter exercises, real questions over the years, easy to make mistakes, and catch them all! This 233 online school APP can learn about exams, brush questions, attend classes and download materials.