下列不是同源性苗勒管混合瘤的成分的是()
A.横纹肌肉瘤
B.纤维肉瘤
C.平滑肌肉瘤
D.恶性纤维组织细胞瘤
E.子宫内膜间质肉瘤
参考答案:A
One of the few things you say about English people with certainty is that they () talk a lot about the weather.
A.need
B.must
C.should
D.can
煤层露头无覆盖或被粘土类微透水松散层覆盖时,煤层露头防隔水煤(岩)柱的留设,计算公式:()。