Instruct: Classify Amazon reviews into positive or negative sentiment
Query: an okay book

this is a very fundamental book on the subject, however, it's easy for a beginner to follow. it lacks the basic equations and theories that describe the intake and exhaust flows. if you are a graduated student, stay away from this book. you would have learned more from fluid dynamics 101 (if you were awake in class). otherwise, this is a good basic, short to the point, easy understanding book.....