不属于产后出血的危险因素是（）
A.子宫肌瘤合并妊娠
B.滞产
C.双胎
D.多次人流史
E.早产
参考答案：E
—What do you think of John?
---- ____ we didn’t like him at first, but we are quite fond of him now.
A．Actually
B．Frequently
C．Gradually
D．Certainly
单线直线基本建筑限界半宽为（）。
A、2440mm
B、2040mm
C、2400mm
D、2004mm
