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.

车体A1修的范围只是检查不存在修理。（）