临产的主要标志是
A.不规则宫缩;
B.见红;
C.规律性宫缩, * * 流血;
D.规律性宫缩,宫颈口扩张;
E.规律性宫缩并逐渐加强,伴宫颈口扩张和胎先露下降。
参考答案:E
根据句意,写出括号内所给单词的适当形式。
小题1:“We don’t want to be treated (different) from others,” the disabled said.
小题2:When a strong wind came from the northwest, the heavy smoggy(雾霾的) air over Wuxi city began to (appear).
小题3:It’s lucky to have so much (value) experience in learning English during the course.
小题4:I can’t understand his (silent) on such an important matter.
在溴化锂溶液中加入表面活化剂,是为了( )。
A.防腐蚀 B.增加真空度C.减少氧的侵蚀 D.强化传热介质