螺内酯:
A.作用部位在近曲和远曲小管
B.可引起低血钾
C.竞争性对抗醛固酮的作用
D.对切除肾上腺的动物仍有利尿作用
E.利尿作用强大迅速
参考答案:C
用所给词的适当形式填空。
1. John often spends some time_______(play) soccer with his friends on weekends.
2. At last, Mr. Johnson remembered what_______(buy) in the supermarket.
3. Linda didn't feel well because she drank too much iced_______ ( tea) just now.
4. Don't let them_______ (shout) that loud,Peter.
5. If they finish_______ (write) their compositions,they will leave for home soon
关于航空气象服务组织机构的叙述,错误的是()
A.我国的航空气象服务是由单独的民航气象机构完成
B.我国的航空气象机构由航空气象观测站、机场气象台和区域气象预报中心组成
C.机场气象台的任务是观测和记录天气实况,向机组提供天气实况
D.国外的航空气象服务部门和航行情报部门结合在一起,由航行情报服务中心发布主要的气象报告