What Is Used to Remove the Material from a Hole

question 17

Multiple Choice

What is used to remove the material from a hole being drilled with a laser?

• A) A jet of clean dry compressed air blasts the molten metal out of the hole.
• B) Laser drilling is always done overhead so the molten metal will run out of the hole.
• C) The intense heat vaporizes the spot with enough force to thrust the material out.
• D) The laser is hot enough so that it passes through the molten metal until the hole is completed and then the molten metal drips out.

---

Definitions:

Confidentiality

Researchers generally promise participants that their responses will not be disclosed to others.

Identity Concealed

To hide or mask one's true personal identity for various reasons.

Participants' Right

The entitlements and protections afforded to individuals taking part in research, ensuring their welfare and ethical treatment.

Justice

The principle of fairness and the moral rightness of laws and their execution in society.