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【单选题】
患者,男性,32岁。因急性化脓性阑尾炎行阑尾切除术,术后12天出现阵发性腹痛,伴呕吐,肛门停止排便、排气,诊断为急性肠梗阻。术中判断梗阻肠管活力的依据,错误的是A.
肠壁色泽
B.
肠壁弹性
C.
肠壁蠕动能力
D.
肠系膜血管搏动
E.
肠管的扩张程度
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举一反三
【单选题】Knowing that represents the critical stress of the slender column, which of the following statements is correct?
A.
is related to the critical load and the cross-sectional area of the column, and is independent of the material.
B.
is related to the s lenderness ratio of the column, and is independent of the cross-sectional area.
C.
is only related to the material, the shape and size of the cross-section of the column.
D.
The value of should not exceed the limit of proportional of the material.
【简答题】机织全棉阿拉伯袍
【简答题】测定岩石粒度组成的常用方法包括 ____。
【简答题】测定岩石粒度组成的常用方法包括 。