初产妇，胎头吸引器加会阴侧切助产分娩足月活婴，胎盘胎膜完整。产后4小时 * * 流血约 5

药品临床试验管理规范制定和实施的目的是（）。

A.为保证药品临床试验过程规范

B.为保证试验结果科学可靠

C.为保护受试者的权益

D.为保护受试者安全

E.为保障民众的安全

完成对话。

P: Can you 1______ a description of the man you are trying to find?

M: Yes, he is about the same age 2______ I am. He is very tall.

P: I have some pictures. Look, does any one of these look like him? What 3______ this man?

He is a man 4______ is as old as you and who is very tall.

M: No, it wasn't 5______. The man I'm looking for 6______ black hair.

P: Was 7______ long?

M: No, he has hair that is very 8______, and has very small nose.

P: Can you remember anything 9______ about him?

M: Yes, he has eyes that are very big and a face that is round.

P: How about his mouth?

M: Oh, his mouth is very small.

P: Is this 10______ man you are looking for?

M: Yes, that's him! That's the man.

急性胰腺炎发病12小时以内，哪一项实验室检查诊断比较准确

A．血钙

B．血糖

C．血淀粉酶

D．血脂肪酶

E．尿淀粉酶

1983～1987年各年年底

某市人口数示意图（单位：千人）

截止到1984年底，该市人口数为（）。

A．9508．0人

B．9508000人

C．9386．7人

D．9386700人

离心式鼓风机轴承的作用是什么？