____ manages the operation and maintenance of electronic motors, communications systems, microwave systems, and other electronic equipment. ____ research, design and manage the operation and maintenance of electrical equipment, power stations, building control systems and other electrical products and systems. ____ research develop and design aircraft, spacecraft and their components. ____ develop and maintain websites, web and mobile applications to meet a client’s requirements. ____ join metal parts by welding, brazing and soldering, and cut and remove defects from metal.

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