◎Actual diver exam content The exam is a written exam only and consists of 40 questions. It is a 5-choice question in a mark sheet format and is divided into the following items. 1.Diving work 10 questions 2. Air supply, descent and ascent 10 questions 3. Hyperbaric disorder 10 questions 4.Related laws and regulations 10 questions The passing score is 60% or more of each item. This is considered to be the correct answer rate. However, a correct answer rate of 40% or more is required for each