question_answer

Consider the following statements:

For precision machining of non-ferrous alloys diamond is preferred because it has

1. Low coefficient of thermal expansion

2. High compression strength

3. High compression strength

4. How fracture toughness

Which of these statements are correct?

A) 1 and 2            

B) 2 and 4

C) 2 and 3            

D) 3 and 4