1. They both operate at the same speed.
   The 3-D is slower than the 2-D.
2. The 2-D is slower than the 3-D.

Actually, the 3-D printer is slower than the 2-D, partly due to the layers it produces.

1. a sealant
   a resin
2. a layer of silicone

A sealant is coated over the printed item in order to strengthen it.

1. in the early 1960s
   in the early 1970s
2. in the early 1980s

It was pioneered in the early 1960s, but it took a full decade to appear commercially.

1. It helps to diagnose certain conditions at an earlier stage.
   It helps to improve the quality of medicines.
2. It helps surgeons to perform less invasive and better surgeries.

The MAKO Tactile Guidance System is like a robotic arm that helps during delicate surgery. Surgeons are able to do a more precise job and perform less invasive procedures.

1. all kinds of audio values, such as decibel level
   all kinds of electrical values, such as volts
2. all kinds of health and body-performance values, such as calories

The multimeter measures a wide range of electrical values, such as volts, ohms, frequency, amps, etc.

1. It can help troubleshoot problems in hazardous factory environments.
   It can help connect a large amount of wires simultaneously.
2. It can help raise the voltage of an entire factory's machinery on a large-scale level.

The multimeter can help troubleshoot problems in hazardous factory environments or industrial plants.

1. It receives very high-frequency signals from outer space.
   It detects sound waves many feet below the ocean surface.
2. It displays the wave pattern of an electrical signal on a screen.

The oscilloscope is able to display a wave pattern of an electrical signal visually on a screen.

1. 50000
   100000
2. 200000

The top models go for around $100,000, although there are many others that are much cheaper.

1. It sorts and divides.
   It sculpts and saws.
2. It cuts and etches.

The laser engraver cuts, etches, engraves, drills and performs all manner of modeling techniques.

1. Windows Server 2003 or Windows 7
   Windows XP or Windows Vista
2. WinFS or Blackcomb

The VersaLASER VLS3.50 runs on its own computer using either Windows XP or Windows Vista operating systems.

1. multiple axes
   sharp blades
2. 20-20 vision

It needs multiple axes. The more axes it has, the more precise and complex a task it can perform.

1. anywhere between 10 and 1,000 RPMs
   anywhere between 50 and 3,000 RPMs
2. anywhere between 100 and 5,000 RPMs

The super-fast Tormach PCNC 1100 Mill can rotate between 100 and 5,000 RPM.

1. It solders so precisely, you can't detect it on the product.
   It heats to a very high temperature setting.
2. It offers very steady levels of heat throughout the soldering process.

The PS-900 Soldering Station offers very steady heat throughout the soldering process.

1. It is used in cold temperatures only.
   It uses a coolant during the sawing process.
2. It remains cool to the touch even after using the tool for 30 minutes straight.

The cold saw is a special type of circular saw that uses a coolant during the sawing or cutting process.

1. electronically using a switch
   manually
2. using a foot pedal

The cast iron Kalamazoo FHC350D cold saw is operated manually.

1. carbon dioxide
   carbon monoxide
2. helium

Carbon dioxide would be an example of a semi-inert gas sometimes used with MIGs.

1. It can weld without the need of a gas canister.
   It can be preset to save time.
2. It can weld at a wire speed of over 17 inches (.18m) per minute.

Certain settings and functions of the Millermatic can be preset. This saves time.

1. It melts upon contact with the welding surface.
   It melts when it heats to temperatures of over 500 degrees Fahrenheit (260 degrees Celsius).
2. It melts when it's energized with electricity.

It melts as it is energized with electricity.

1. It can change forward-backward directions very fast.
   Its wheels allow it to travel in any direction.
2. It can vault over objects where necessary.

The Sidewinder has specially designed wheels that allow it to travel in any direction comfortably.

1. La Mancha
   Japan
2. Sweden

He hailed from Sweden and his name was Bengt Ilon. He actually invented it way back in the 1970s.