- Section 1
| 56. |
In which decade was the SPICE simulator introduced? |
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| 57. |
Who invented the first controllable flying AEROPLANE (AIRPLANE)? |
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| 58. |
What groovy item was invented by Englishman Edward Craven Walker in 1963? |
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| 60. |
What did cardiologist Dr. Paul Zoll invent in Massachusetts in 1952? |
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