Main branches of engineering

Read the following text and fill in the gaps with the following words:

Engineering is a broad (1) __________ which is often (2) __________ into several sub-disciplines. These disciplines concern different (3) __________ of engineering work. Although an engineer will be trained in a specific discipline, during an engineer's career the engineer may become multi-disciplined and work in several areas. Historically the main branches (or (4) __________) of Engineering are categorized as follows:

• (5) __________ engineering - The design and construction of public and private works - (6)__________, railways, water supply, bridges and (7) __________.
• (8) __________ engineering - a very broad area that may include the design and study of various electrical & electronic (9) __________, such as electrical circuits, generators, motors, electromagnetic/electromechanical devices, electronic devices, electronic circuits, optical fibers, optoelectronic devices, computer systems, (10) __________.
• (11) __________ engineering - The design of physical or mechanical systems, such as (12) __________, powertrains, kinematic chains, vacuum technology, and vibration isolation equipment.

Also, nowadays there are some other small sub-branches such as: aerospace engineering, (13) __________ engineering, computer engineering, medical (14) __________, biological engineering, art engineering and many others.