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Задание 1

Plastics

Plastics are usually produced by synthesis from such natural materials as water, air, salt, coal and natural gas. The technology is simple and cheap. While … (solid, cheap, uniform) in finished state, plastics are liquid at some stage of manufacture, and it is easy to form plastics into various shapes.

Plastics are different in … (hardness, properties, needs),characteristics and …(pressure, application, thermosets). Plastics are … (reliable, available, thermoplastics) ,… (expensive, cheap, structural), durable. Plastics resist… (weight, strength, corrosion).

Plastics are machined like … (metals, forgings, carbon). Their … (lightness, high weight, colour), strength, hardness, chemical resistance, …(colour, durability, application) make it possible to use plastics in electric and electronic equipment, transportation, agriculture, etc.

The application of plastics is … (achieving, satisfying, calling for) the requirements of all industries. There is no industry now where plastics are noticed.

Задание 2

detailed study, fundamentally, symmetrical shapes, generally, fabrication methods, hollow spindle, cutting location, to control operations, to position the work, to separate, to drop into a container, to involve a factor

подробное изучение, в основном, симметричные формы, в общем, методы изготовления, полый шпиндель, место резки, контролировать операции, располагать работу, разделять, уложить в контейнер, привлекать фактор

Задание 3

 to work to machine, proper convenient,  location position, to fabricate to produce

Задание 4

raw finished, complex simple, ease difficulty, to retract to feed