資格のキーホルダー · Regulations, safety management and theory
Refrigeration Machinery Officer (Class 1 and 2)
Statutes and refrigeration-cycle calculations, with every choice explained.
The Keyholder app includes Class 2 (230 multiple-choice questions, 40-question, 270-minute mocks across three subjects) and Class 1 (213 questions: multiple-choice mocks for regulations and safety management, 150 minutes, plus theory calculation and written practice that is not graded automatically). One purchase covers Classes 3, 2 and 1.
Before you start
- iOS app
- 資格のキーホルダー 宅建・簿記・FP・ITパスポート
- What it does
- One app with practice questions for 49 Japanese exams across 34 qualifications, each with its own study record and exam date.
- Content and features
- 49 exams, 34 qualifications / Explanations for every choice / Automatic review of missed questions / Daily target from your exam date
- Requirements
- iOS 16.0 or later
- Free access and purchases
- The first 10 questions of every qualification are free. Full questions and mock exams are a one-time in-app purchase per qualification, not a subscription.
- Before choosing
- Japanese-language exam practice. Not an official app of any exam body and no pass guarantee. Most questions download when you open a qualification; the first 10 work offline.
iOS facts checked: · Current App Store listing and purchase terms ↗
3-QUESTION CHECK
Try three questions.
Can you recall the reason?
After each answer, read the explanation for every choice in Japanese. No typing or sign-up is required.
QUESTION 1 / 3
低温熱源270 K、高温熱源300 Kの逆カルノー冷凍機の成績係数Tc/(Th−Tc)はいくらか。
本ページの3問は Particles and Waves の独自問題です。高圧ガス保安協会が公表した試験問題の転載ではなく、同協会の公式ページでもありません。
CONTINUE IN THE APP
Continue in the Keyholder app.
Move from focused repetition to exam-format mock tests while keeping your study history.
This page and app are independent study aids, not official exam-authority products. Check current official information before taking an exam.