The nurse provides care for a client with chronic obstructive pulmonary disease (COPD). Administering high doses of oxygen may produce what result

A. Increased respiratory drive.
B. Diminished respiratory drive.
C. A mismatch between ventilation and perfusion.
D. A profound decrease in partial pressure of arterial carbon dioxide (PaCO₂).

通过对轨检车超高波形图的研读，可以确定轨道中曲线直缓、缓圆、曲中、圆缓、缓直等控制点的位置。