資格のキーホルダー · First-stage exams for Grades 1 and 2
Plumbing Construction Manager (Grades 1 and 2, first stage)
Mechanical engineering, management and regulations, with every choice explained.
The Keyholder app includes original questions for the first-stage exams: Grade 1 (365) and Grade 2 (260), each in five sets with choose-and-answer mocks. They are available in the Android version; the iPhone version is still in review. Grades are separate purchases. The second stage is not included.
The iPhone version is in review.

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
排水トラップの封水が減った二つの例を考える。Aは長く使わず乾いた室内に置かれた器具、Bは近くの別の器具から大量の排水が流れた時に封水が吸い出された器具である。AとBの主な原因の組合せとして適切なのはどれか。
本ページの3問は Particles and Waves の独自問題です。全国建設研修センターが公表した試験問題の転載ではなく、同センターの公式ページでもありません。iPhone版への収録は審査中です。
This page and app are independent study aids, not official exam-authority products. Check current official information before taking an exam.