Unit 1 Safety and Requirements
Section I Passages
Text A Aircraft Maintenance Safety
Text B Tool Control Requirements
Section II Dialogues
Section III Grammar or Structure Study （Imperative Sentence）
Unit 2 Aircraft Structure
Section I Passages
Text A Main Parts of an Aircraft
Text B The Boeing 747
Section II Dialogues
Section III Grammar or Structure Study （Passive Voice）
Unit 3 Parts of Aircraft Engine
Section I Passages
Text A Parts of a Jet Engine
Text B Types of Air-Breathing Engines
Section II Dialogues
……
