D_ _ _ _ _ _ _ is the process of drawing designs and diagrams for industries like engineering and manufacturing.

(a)  

An e _ _ _ _ _ _ _ view is a diagram that shows the parts of something slightly separated from each other so that each component is displayed clearly.

(a)  

A t_ _ _ _ _ _ _ _d_ _ _ _ _ _ is a precise, realistic drawing of something that helps engineers understand the design better.

(a)  

Engineers often use C_ _ to create technical designs using a computer.

(a)  

The designer prefers to use C_ _ - a method of using primitive shapes to show volume within 3-D models.

(a)  

A p_ _ _ _ _ _ _ _ _ _ _ _ _ rendering is an image that shows very realistic representations of objects and processes.

(a)  

With a traditional technical drawing, designers must create a p _ _ _ _ _ _ _ _ to get realistic models of their designs.

(a)  

P_ _ _ is a data exchange format that contains geometry functions, and process plans for a product.

(a)  

The program’s photorealistic rendering will provide an accurate sense of the f_ _ _ _ p_ _ _ _ _ _.

(a)  

Using (A) CAD sofware makes (B) designing and changing (C) models faster and easily (D) than traditional drafting.

(a)  

CAD systems can be used (A) for remove (B) operator errors and reducing (C) manufacturing costs (D).

(a)  

Manual drawing is (A) usually less preciser (B) and slower than (C) computer-aided design so (D) CAD is popular nowadays.

(a)  

Engineers use (A)ThinkCreator 3.0 to explain (B) assembly much easily (C) than the (D) old program.

(a)  

Designers can use (A) CAD programs to create (B), modify and analyzing (C) a physical object (D).

(a)  

CAD programs are used (A) to generating (B) detailed manifold models and (C) non-manifold models easily (D).

(a)  

CAD software has (A) the capability to viewing (B) the object from any angle (C), even from the inside looking (D) out.

(a)  

With (A) traditional design, you have to imagining (B) a three-dimensional shape from (C) a two-dimensional drawing (D) .

(a)  

One problem in working (A) with wood or clay models is (B) that they don’t have to convert (C) into drawings for manufacture (D) .

(a)  

Think Creator 3.0 software is expensive (A) to purchase than other programs but (B) we don’t have to spend (C) money on (D) materials.

(a)  

The workers g_ _ _ _ the blades regularly, so the band saws are sharp.

(a)  

When workers want to j_ _ _ two pieces together, they can use a nit and a bolt.

(a)  

Remember to p_ _ _ _ the blue button when you want to turn on this milling machine in this workshop.

(a)  

When the machine is old, the mechanic usually uses cream or other substances to p_ _ _ _ _ to make it shinier.

(a)  

To c_ _ _ an object means to pour hot liquid, such as melted metal, into a shaped container where it becomes hard.

(a)  

If something made of metal s_ _ _ _ _, it breaks into two pieces because of a sideway force.

(a)  

E_ _ _ _ _ _ _ _ is the act of forcing or pushing something out of something.

(a)  

In Honda Company, workers use a pincher machine to p_ _ _ _ a row of holes in the metal sheet.

(a)  

To f_ _ _ _ something means to make an object by heating it in a fire and hitting it with a hammer.

(a)  

To w_ _ _ means to join two pieces of metal together permanently by melting the parts that touch.

(a)  

Why are (A) thin metal sheets weld (B) to a frame?- Because (C) they want to make (D) a car body.

(a)  

CAD is (A) a useful program because (B) with CAD, drawings can produce (C) and transferred to different machining processes(D).

(a)  

Before (A) the piston moves(B), at the same timeit (C) turns the camshaft in (D) a rotary movement.

(a)  

Addictive layer manufacturing (ALM) is (A) a manufacturing technique that can used (B) for rapid prototyping. In ALM, material (C) is added (D) in very thin layer.

(a)  

As a material is turn (A) on a machine called (B) a lathe, a part of it (C) is removed to make (D) the correct shape.

(a)  

The next step is painting (A) the cast iron sheets.When (B) the paint is (C) dry, the parts bolted (D) together.

(a)  

Jack and Jason are new technicians(A). They must be trained (B) to operate the machine after (C) they can use (D) it.

(a)  

How is A) the melted (B) plastic,pushed (C) along the barrel? - They are used (D) a ram.

(a)  

Plastic is (A) an important material (B) in mechanical engineering. It is used (C) to make many products because of (D) it’s inexpensive.

(a)  

Most (A) car components are assembled (B) by robotic machines. Although, (C) some parts can only be done (D) by humans.

(a)  

To help answer the concern about environmental pollution, b _ _ _ _ _ _ _ _ _ _ have been developed from plant materials.

(a)  

D _ _ _ _ _ _ _ _ _ plastic bowls or is the cup are designed to be thrown away after you have used it once or a few times, so they are not very good for the environment.

(a)  

Plastic can be used in everyday plastic products, which highlights that it is a v _ _ _ _ _ _ _ _ material in our everyday activities.

(a)  

With the addition of p _ _ _ _ _ _ _ _ _ _ _, plastics become softer and more flexible and it can be used in many applications.

(a)  

A _ _ is the popular choice for electronic exteriors and medical equipment its primary advantage is that it guarantees a solid shape.

(a)  

P _ _ _ _ _ _ for plastic is organic compounds added to a polymer base to give a specific color to plastics.

(a)  

Plastics can be given additional characteristics such as fire r _ _ _ _ _ _ _ _ _ to allow them to be used in aircraft.

(a)  

Thermoset plastics are stronger than thermoplastics but can not be r _ _ _ _ _ _ _ and have to be disposed of in other ways.

(a)  

Polypropyle is a strong plastic and it can usually w _ _ _ _ _ _ _ _ high temperatures, so it has a wide range of applications.

(a)  

High-Density P _ _ _ _ _ _ _ _ _ _ _ products are very safe and are not known to transmit any chemicals into foods or drinks.

(a)  

Plastics can to be (A) given additional characteristics (B) such as fire retardancy to allow (c) them to be used in (D) aircraft parts.

(a)  

It is (A) possible in (B) produce a (C) moldable “plastic” ground-up natural cellulose, other materials, and (D) water.

(a)  

It is possibly (A) that they will (B) make a (C) plastic engine and a plastic wing before (D) 2035.

(a)  

Plastics are (A) versatile because (B) they can are (C) shaped easily into (D) a wide range of forms.

(a)  

Thermoset plastic composites are (A) capable of meet (B) the specifications of (C) a wide range of production materials at (D) a very low cost

(a)  

We will (A) be able to using (B) other raw materials instead of (C) synthetic plastics in (D) the future.

(a)  

Plastic packaging is unlike (A) to be replaced (B) in the near future for (C) many of its (D) current uses.

(a)  

Plastic can be to used (A) in everyday plastic products, which highlights (B) that it (C) is a versatile material in (D) our everyday activities.

(a)  

Polymers can mould (A) into various shapes (B) or drawn (C) into filaments that can be used (D) as textile fibers.

(a)  

Casein became (A) one of the first leading materials (B) for making (C) items such as buttons and buckles because it can be coloured (D).

(a)  

After a product is designed, usually by an industrial designer or an engineer, m_ _ _ _ _ _ are made by a mould-maker (or toolmaker) from metal, usually either steel or aluminium, and precision-machined to form the features of the desired part.

(a)  

B_ _ _ marks are dark coloured (either black or rust coloured) marks on the edges or on the surface of the moulded product that are not part of the product design.

(a)  

The molten polymer is pushed by the ram through the n_ _ _ _ _ (a small hole) into the mould, and becomes hard.

(a)  

S_ _ _ marks are common injection molding defects that occur in thicker sections of molded parts. Since thicker sections contain more plastic, they will naturally take longer to cool.

(a)  

One of the chief causes of v_ _ _ _ _ v_ _ _ _ is inadequate molding pressure to force trapped air out of the mold cavity.

(a)  

The soft plastic is injected through the nozzle into a shaped c_ _ _ _ _, an empty space, between the two halves of a mould.

(a)  

R_ _ _ _ _ _ _ _ _ moulding is a high-temperature, low-pressure plastic forming process which uses heat and rotation along two axes to produce hollow, one-piece parts.

(a)  

After

the soft, warm plastic is pushed toward a nozzle by the ram, it is then i_

_ _ _ _ _ _ through the nozzle into a shaped cavity between the two halves of a

mould.

(a)  

Injection moulding uses a r_ _ , a machine part used to force molten plastic or rubber material into a mould cavity.

(a)  

S_ _ _ _ s_ _ _ _ are a phenomenon in which the mold cavity cannot be completely filled. As a result, parts appear incomplete.

(a)  

Sink marks are (A) common injection molding defects (B) that occurs (C) in thicker sections of molded parts. Since thicker sections contain (D) more plastic, they will naturally take longer to cool.

(a)  

Blow molding is (A) a manufacturing process for forming (B) and joining together hollow plastic parts. It also is used (C) for forming (D) glass bottles or other hollow shapes.

(a)  

Compression molding involves (A) placing a heat (B) plastic inside of a heated mold, then closing (C) it to compress the plastic into (D) the desired shape.

(a)  

A die is (A) a block of metal with a special (B) shape, or with a pattern cut into it, that used (C) for shaping (D) other pieces of metal such as coins.

(a)  

With extrusion moulding (A), hot melted plastic pressed (B) through a shaped hole to create (C) a lengthy shaped (D) plastic part.

(a)  

The molten metal pushed (A) by the piston under pressure (B) into the cavity between the two halves (C) of a mould and (D) fills the cavity.

(a)  

As

Figure 2 show (A), the molten polymer is pushed (B) by the ram through

(C) the nozzle into the mould, and becomes (D) hard.

(a)  

As can besee (A) in Figure 1, after a cooling period (B), the two halves (C) of the mould open, and the bottle is ejected (D) from the mould onto a conveyor belt.

(a)  

In the second (A) stage, compressed air is blow (B) through the nozzle into (C) the moldten polymer (C) parison.

(a)  

Injection moulding was used (A) to

create many things (B) such as wire spools, bottle caps, automotive

parts (C) and components, mechanical parts (including gears), and most

other plastic products available (D) today.

(a)  

- You should maintain the engine s _ _ _ - a_ _ _ _ _ _ _.

- It means that I have to do maintenance twice a year, right?

- Yes.

(a)  

The lathe has just been out of order. I think the reason for that breakdown is it hasn’t been m _ _ _ _ _ _ _ _ _ for a long time.

(a)  

That CNC machine c _ _ _ _ _ _ _ a large amount of oil for lubrication last year.

(a)  

The reservoir needs r _ _ _ _ _ _ _ _ immediately because the fluid level is too low to make engine cooler.

(a)  

C _ _ _ _ _ _ _ _ is a piece of equipment that reduces gases to their liquid or solid form.

(a)  

We should install a t _ _ _ _ _ _ _ _ _ for our car engine to avoid overheating.

(a)  

The electricity i _ _ _ _ _ _ _ _ _ _ _ today caused many problems because all machines had to stop working without electricity.

(a)  

The engine needs an o _ _ r _ _ _ _ _ _ after a long time of using without changing oil.

(a)  

G _ _ _ _ _ _ _ is a channel or track for controlling the line of motion of something.

(a)  

The maintenance costs of different engines d_ _ _ _ _ from each other due to their time of usage and quality.

(a)  

If your home air conditioner is (A) not cold enough, (B) you might having (C) a coolant leak. (D)

(a)  

The water pump leaks (A) a lot, so (B) you had better to replace (C) it (D).

(a)  

The oil tank (A) needs to replace (B) every year to make (C) sure the machine works (D) smoothly.

(a)  

If the machine components are (A) dirty or worn, clean (B) or replacing (C) them to avoid (D) gradual product failure.

(a)  

Have (A) you tried adjusted (B) the bearing of (C) headstock or any other running parts (D)?

(a)  

If (A) the power of (B) the machine does not (C) turn on, checking (D) the thermostat.

(a)  

The (A) timing belts slip (B) out of the grooves, they (C) might wears out (D).

(a)  

You should checks (A) and renew (B) oil tank regularly (C) to keep the machine properly lubricated (D).

(a)  

Try observe (A) operations or starting (B) turning machines to ensure (C) that specifications are (D) met.

(a)  

Making (A) sure you turn off (B) the power before fixing (C) the gear shaper or any other machines (D) in this workshop.

(a)