7The Maintainer's Helper, Group B Passbook(R) prepares you for your test by allowing you to take practice exams in the subjects you need to study. It provides hundreds of questions and answers in the areas that will likely be covered on your upcoming exam, including but not limited to: Proper selection and use of hand and power tools and equipment employed in the maintenance and repair mechanical and electro-mechanical equipment; Safe work practices in repair of mechanical and electro-mechanical equipment; Reading and interpreting written instructions; and more.