高危险性微生物在低级别的生物安全防护实验室操作可造成生物性突发事件。
参考答案:对
连词成句。
1. Bob's is teacher she English
2. live Jenny where does
3. from it far to Tianjin how is Beijing
4. eighty-three hundred it kilometres is four
容易引起子宫破裂的软产道阻塞有()
A. * * 纵横
B.外阴水肿
C. * * 壁囊肿及肿瘤
D.宫颈水肿
E.宫颈坚韧