清水池的作用之一在于调节泵站供水量和用水量之间的（）差额。A、流速 B、流量 C、扬程D

短文改错﹙10分﹚

Though great progress have been made in science these years, there are still many people live in poor conditions. They make their lives by collecting or selling used things. Their children cannot go to school because they had not enough money to send their children there. How do you think so many people still suffer from poverty now? The answer lies on the population explosion﹙人口大爆炸﹚. A president of a developing country once said, “It is us who are to blame for the poverty because we used to ‘produce’ child without limit.” Although this few words sound simple enough, they have clear pointed out one of the causes of the population explosion.

苁蓉丸1功效与作用

患者男性，45岁，因肝硬化伴大量腹水住院治疗。为缓解腹胀症状，需要进行放腹水。现请你施行腹腔穿刺术。

关于羊水，下列哪项是错误的（）

A.羊膜腔内的液体称为羊水

B.足月妊娠时羊水量约1000ml

C.呈弱碱性或中性

D.能保持羊膜腔内恒温

E.临产后能促使宫颈口扩张

检验确定油墨中连接料的（）过少，造成印刷图文出现粉化，要改用合格油墨。

A.色料

B.辅料

C.树脂

D.醇类