All circuits need three basic parts: an energy source, wires, and the object that is going to change the electrical energy into another form of energy called
a. load

b. form

c. frame

d. none of the above

What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.

What is the major difference between thermoplastics and thermosetting plastics from the polymerization structure point of view?

What is the chief metrological difference between measuring with a microscope and with an electronic comparator? a. the microscope is limited to small workpieces.a. the microscope is limited to small workpieces. c. the comparator can only examine one point on the workpiece. d. the microscope carries its own standard.