Final answer:
True, sub assemblies are combined in an assembly drawing, which is an essential part of engineering and manufacturing for depicting the complete product.
Step-by-step explanation:
True. All sub assemblies are brought together in an assembly drawing. An assembly drawing is a technical drawing that shows the components of a more complex product. This type of drawing is crucial in the engineering and manufacturing processes as it provides a comprehensive overview of the final product. It includes details on how the various parts fit and work together, as well as specifying dimensions, tolerances, and other important assembly information.