Important Inventions and Discoveries in World » Exercise – 1
58. For what does the world owe Almon Strowger a debt of gratitude?
(a) Parking Meters
(b) Vending Machines
(c) Automatic Telephone Exchanges
(d) Traffic Lights
| Subject Name : General Knowledge |
| Exam Name : UPSC, SSC, KVS, NVS, IBPS, RBI, SBI, RRB |
| Posts Name : Post Graduate Teacher, College Lecturer, Officer, Office Assistant, Clerk |
| General Knowledge Books |
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