For what does the world owe Almon Strowger a debt of gratitude ?

Related Mcqs:

Human beings use _______ liters of pure oxygen per day.

A. 550 B. 2500 C. 1,050 D. 10,000...

The luster of diamond is due to_________?

A. Reflection B. Total internal reflection C. Refraction D. None of these...

ECG stands for? (FPSC 2019)

1-Electro cardio gram 2-Electrode cardio gram 3-Electricity  cardio gram 4-Non of these...

Who invented bifocal eyeglasses?

A. Ibn-e-Haitem B. Benjamin Franklin C. Archemedes D. None...

Which of the following vitamin is known as Pyridoxine?

vitamin B-1 vitamin B-2 vitamin B-6 vitamin B-12...