死胎可对母体造成的并发症（）.
A.产后出血
B.DIC
C.产后感染
D.产伤
E.滞产
参考答案：A, B, C
从颈椎开口位照片中，判断摄片体位正确的依据是()
A．上门齿与枕骨边缘投影重叠
B．上门齿与枕骨边缘稍分离
C．上门齿投影在枕骨边缘的下方
D．上门齿投影在枕骨边缘的上方
E．上门齿与枕骨边缘分离约0.5cm
We shall fulfill your order according to the remarks in our last letter if we do not hear from you ______ the contrary.
A．in
B．to
C．on
D．with
