In the past, the number of mathematical machine classics questions per month could reach more than 300. However, with the nonstandard stock exchange, sometimes the interval of stock exchange is very short, and sometimes the number of mathematical machine classics is only 100, and the degree of incompleteness is also very serious.

The review time of machine classics becomes shorter.

Generally speaking, we suggest that you take the exam three weeks after the last library change, so that the number of machine classics is more and you are more prepared. However, the cycle of changing databases is relatively short recently. Many students may take the exam 7 days or 10 days after the database change, but the number of computer classics questions is not much after the database change. The time left for students to read machine classics is limited, so it is necessary to have a surprise look at the machine classics questions before the exam.

The possibility of repeating the question has increased.

With the shortening of the cycle of changing questions, the official will definitely add some new questions to the question bank. However, the database changes relatively frequently, and the proportion of new questions may still be limited, which means that the possibility of repeated questions appearing in the database of machine classics every month will increase to a certain extent compared with previous years.