Question:
The first symbol in a grinding wheel code is the _______.
Answer:
Abrasive Type
Question:
What is the operation of threading a drilled hole?
Answer:
Tapping
Question:
What is heavy water formula?
Answer:
D2O
Question:
What is called strategic metal?
Answer:
Titanium
Question:
Glass is made of the mixture of ____.
Answer:
Sand & Silicate
