It supports both "unlimited" and "crane limited".Please select Crane Limited or No Crane Limited in "Knowledge about Cranes" and "Related Laws" in the subject selection.This is an app that allows you to learn the past problems of the Crane / Derrick Driver Qualification Exam published in April 2021 in a quiz game format.You can learn well because the answer explanation is attached.The content is the same as the book "Crane / Derrick Operator Past Questions / Answers Commentary" sold by us (one time).Please do your best.We are not responsible for any damage caused by browsing this app.
クレーン デリック運転士 2021年4月
