【Please read the profile before considering or purchasing】 ・Technical Engineer, Water and Sewage, Second Exam Text 　【Trends and Countermeasures】 　→ Written in highlighter 　→ Includes the mandatory subjects (multiple choice) and elective subjects (descriptive) of the second exam 　→ Mandatory subjects (multiple choice) include predicted questions and explanations from 2014, and past questions and explanations from 2013 　【Multiple Choice Question Collection】 　→ No writing 　→ Includes questions, answers, and explanations from the first and second exams from 2016 to 2013