危険物乙4コンプリートマスター解説付

This is a learning app specifically designed for the Class B, Category 4 Hazardous Materials Handler exam. It includes detailed explanations for all 2,000 multiple-choice questions. Not only does it explain why the correct answer is correct, but it also carefully explains why the incorrect options are wrong, for each and every question. [Contents Included] - Laws and Regulations: 800 questions (10 fields including designated quantities, manufacturing facilities, and safety systems) - Basic Physics and Basic Chemistry: 600 questions (10 fields including combustion, fire extinguishing, and static electricity) - Properties of Hazardous Materials and Methods of Fire Prevention and Extinguishing: 600 questions (10 fields including various petroleum products and animal and vegetable oils) - Text-Based Learning: 30 lessons (detailed explanations at the level of a reference book) - Important Charts and Diagrams: 60 sheets (classification tables, property comparisons, flowcharts, etc.) [Learning Functions] - Review based on the forgetting curve (SM-2 algorithm) - Mock Exam (35 questions, 135-minute format, same as the actual exam) - Weakness Analysis (visualization of correct answer rates by subject and field) - Question and Answer Mode (learn quickly in spare time) - Bookmark Function (save important questions) - Learning Record and Automatic Recording of Consecutive Learning Days - Dark Mode Support - Text-to-Speech (TTS) Function [About the Exam] The Class B Hazardous Materials Handler (Category 4) is a national qualification for handling flammable liquids such as gasoline, kerosene, diesel fuel, and heavy oil. It is required in a wide range of industries, including gas stations, chemical plants, and warehousing, and is a popular qualification with over 200,000 test-takers annually. The exam consists of 3 subjects and 35 questions; a score of 60% or higher in each subject is required to pass. [Free Trial] All features are free for 7 days after installation. After the free period, you can answer up to 20 questions per day. [Premium Plan] - Monthly Plan: Unlimited access to all features. You can cancel anytime. - One-time Purchase Plan: Permanent use with a single payment. [About Subscriptions] - Monthly plans automatically renew. - Your account will be charged at confirmation of purchase. - Subscriptions automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current period. - Your account will be charged for renewal within 24 hours prior to the end of the current period. - Subscriptions can be managed and canceled from your account settings after purchase. - If you purchase a subscription during the free trial period, any unused portion of the free trial will be forfeited. Privacy Policy: https://b19.co.jp/privacy Terms of Service: https://b19.co.jp/terms