Following an earthquake, a client who was rescued from a collapsed building is seen in the emergency department. He has blunt trauma to the thorax and abdomen. Which nursing observation most suggests the client is bleeding

A. Prolonged partial thromboplastin time (PTT).
B. Recent history of warfarin (Coumadin) usage.
C. Diminished breath sounds.
D. Orthostatic hypotension.

对美容师刻苦钻研，理解不正确的是（）。

A、美容师刻苦钻研，才能不断吸取国内外同行的先进经验

B、美容师不用费心研究新技术与理论，只有实践才能提高服务水平和综合素质

C、美容师刻苦钻研，才能提高服务水平

D、美容师不刻苦钻研就无法提高综合素质