有助于鉴别子宫肌瘤与子宫体癌的是：
A．子宫外形和大小
B．肿块大小和密度
C．肿瘤轮廓和边缘
D．增强扫描的强化特征
E．以上都不是
参考答案：D
—______ the pants?
—They're 15 yuan. [ ]
A. How many is
B. How many are
C. How much is
D. How much are
补料专用管线在使用过程中应注意什么？
