如果企业速动比率很小，下列结论成立的是哪一项（）。A.企业资产流动性很强 B.企业流

  Some students believe that whether they have much money or large possessions, they will be happy. They believe that they will be able to do anything they wanted to do if they have money. Some students think that they should be good health, and enjoy whatever they like. Many students wish to have much wealth from their parents. In this way, they don’t have to work hardly and they can own everything. I don’t quite agree on the above points. I don’t think money means happy. We cannot buy much things with money, such as health, happiness and knowledge. I value knowledge, it makes me happy, for I can do a lot of for mankind with knowledge. Although different people value happiness differently, me wealth of happiness is in my study.

黄绿色水样便，有伪膜（）

A.轮状病毒肠炎

B.空肠弯曲菌肠炎

C.真菌性肠炎

D.致病性大肠埃希菌肠炎

E.伪膜性肠炎

毕业前夕，少不了留言赠别。请你参照例句，分别以语文、数学、物理、化学、历史、地理老师的身份，给同学写一则赠言。（任选两位老师身份写）（8分）

例句：英语老师——人生可以有一般现在时、现在进行时，但绝不能有一般过去时和将来时。（先在前一横线上填上老师类别，然后在后面的横线上写下赠言。）

（1）       老师——                                                              

（2）       老师——                                                           

患者，男性，51岁。反复呼吸困难3年余，测BP146／86mmHg。查体：双肺呼吸音粗，可闻及少许湿啰音，心律绝对不齐，心尖区可闻及2／6级收缩期杂音，双下肢可见水肿。心脏超声提示：风湿性心脏病伴二尖瓣狭窄。

该患者考虑合并心房颤动，心率130次／分，在应用洋地黄治疗过程中。下列情况应立即停止用药的是（）

A.洋地黄中毒

B.右心衰竭

C.左心衰竭

D.心律失常

E.急性心肌梗死

阐述架空线路的主要元件有哪些，它们的主要作用是什么？