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患者，男，18岁。创伤25分钟来院，神志清楚，面色苍白，右大腿外侧可见3cm长创口，无出血，肢体无反常活动，血压90/60mmHg，脉搏120次／分，呼吸28次／分，病人自觉腹胀，排气一次，不恰当的急诊处置是（）。
A . 腹部穿刺
B . 右大腿X光摄片检查
C . 腹部超声检查
D . 建立静脉输液通道
E . 立位胸腹部透视检查
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