下列哪一种肿瘤不是上皮来源的肿瘤()
A．基底细胞癌
B． * * 状瘤
C．甲状腺髓样癌
D．横纹肌肉瘤
E．混合瘤
参考答案：D
A security market with price continuity is most accurately characterized as a market in which:（）
A. assets can be bought or sold quickly.
B. an asset’s price reflects all available information about the asset.
C. prices do not change much from one transaction to the next in the absence of new information.
肠套叠整复成功判断
A．肠套叠病程36小时，全身情况可B．肠管坏死，极度危急时C．口服碳片8小时后由肛门排出D．果酱样血便E．肠套叠病程56小时
