某产妇，前置胎盘，剖宫产术后，预防性应用抗生素的时间应为（） A.术后6h B.术前 发布时间：2020-09-17 16:38 │ 来源：www.tikuol.com 题型：单项选择题 A2型题 问题： 某产妇，前置胎盘，剖宫产术后，预防性应用抗生素的时间应为（）A.术后6hB.术前1hC.术后24hD.脐带钳夹后E.术前3天
题型：单项选择题 A2型题 完形填空。 There is a big tree 1 my house. A bird 2 in the tree. Every day I take some food to the tree. 3 bird sees me and comes 4 . The food is in my hand. The bird comes 5 my hand and 6 the food. After 7 it goes back into the 8 . I give 9 food to this bird every day. And the bird 10 me. We are good friends.( )1. A.in front( )2. A.sitting ( )3. A.A ( )4. A.on ( )5. A.in ( )6. A.eats ( )7. A.me ( )8. A.house ( )9. A.little ( )10.A.thank B.near B.livingB.An B.to B.to B.eat B.it B.tree B.some B.likes C.from C.lives C./ C.from C.from C.with C.these C.sky C.any C.sees D.on D.sit D.The D.down D.for D.for D.that D.field D.a few D.is like 查看答案
题型：单项选择题 A2型题 恩氟烷对中枢神经系统的影响，正确的是()A．浅麻醉时有惊厥性棘波B．Pacch低于正常时，该棘波增多C．棘波产生时，在脑电图上可以看到降低对视，听刺激的诱发电位D．临床及动物实验证明可引起持久的中枢神经系统功能障碍E．收缩脑血管，降低颅内压 查看答案