Which is not a reason for the hydraulic fluid around the cylinder ...

[brutforce]

Which is not a reason for the hydraulic fluid around the cylinder in the experimental apparatus for measuring rock strength (as in Figure 11.16)?
 
  A) to imitate tectonic stresses within Earth
  B) to imitate surrounding rock pressures
  C) to imitate pressures of depth
  D) to imitate deep, confining pressures within Earth

Question 2

Deformation under low stress, below yield strength, is often
 
  A) elastic.
  B) plastic.
  C) irreversible.
  D) compressive.

[polinasid]

Answer to Question 1

Answer: A

Answer to Question 2

Answer: A