Erjian exam is very difficult. 1, the subjects of adult college entrance examination are Chinese, mathematics and foreign languages respectively. The second-level constructor examination is divided into three subjects: construction engineering regulations and related knowledge, construction engineering project management and professional engineering management and practice. < br > 2。 The adult college entrance examination is difficult, the range of test sites is high school basic knowledge, there are few test subjects, and the admission score is relatively low. Erjian exam is more difficult. Of these three subjects, professional practice is the most difficult. There are both multiple-choice questions and case questions in practical subjects, and case questions have more knowledge points. At the same time, there are more applications of calculation and knowledge points.