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【单选题】
临产的主要标志是A.
见红，规律宫缩，胎头下降
B.
规律宫缩，破膜，胎头下降
C.
见红，破膜，扩张
D.
规律宫缩，扩张，胎头下降
E.
见红，破膜，规律宫缩
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A.
正确
B.
错误
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A.
城镇化的速度要适度
B.
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C.
走市场推动、政府导向的城镇化道路
D.
实现城镇发展方式的多样化和合理化
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【单选题】某轮沿赤道向正东航行,航速15kn,航行两天后的实际船位位于同一时刻推算船位的 (无其它误差) 。
A.
正东约3.5n mile
B.
正西约3.5n mile
C.
正东约2n mile
D.
同一位置
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