試題詳解

57. Which of the following statements is not true?
(A) If an external pressure is applied to a confined fluid which is incompressible, the pressure at every point within the fluid increases by that amount.
(B) The magnitude of pressure exerted by an object on a given surface is equal to its weight acting in the direction perpendicular to that surface. Therefore, like the force vector, pressure is also a vector quantity.
(C) 1 atm is about 14.7 psi.
(D) At any depth in a static fluid, the pressure is the same in all directions at a given depth.
(E) Where fluid velocity is high, pressure is low; where velocity is low, pressure is high.