本更新的研究指南为ASNT三级考试的准考生提供ASNT三级考试的技术知识回顾。它用于全面的无损检测，如ASNT无损检测手册。本版更新至2011版SNT-TC-1A和CP-105，包括更新的章节审查问题、更新的规范和标准章节、新附录和全新的导波章节。

This updated ultrasonic testing study guide provides prospective ASNT Level III examinees with a review of the technical knowledge for an ASNT Level III exam. It is intended to be used with a comprehensive NDT text, such as ASNT'sNondestructive Testing Handbook. This edition was updated to the 2011 editions of SNT-TC-1A and CP-105 and includes updated chapter review questions, an updated chapter on codes and standards, new appendices and an entirely new chapter on guided waves.