Inventions Online Tests
Traffic light with three colours MCQ (Multiple Choice Questions) PDF Download
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The MCQ: Which one of the following invents the traffic lights with three colors; "Traffic light with three colours" App Download [Free] with answers: sir william potts, dr dennis colonello, dr larry wang, and sir norman rolston for online elementary school classes. Solve Inventions and Inventors Quiz Questions, download Apple eBook (Free Sample) for school certificate.
Traffic light with three colours Questions and Answers PDF Download
Which one of the following invents the traffic lights with three colors?
- Sir William Potts
- Dr Dennis Colonello
- Dr Larry wang
- Sir Norman Rolston
Inventions Practice Tests
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