已知离心率为e的双曲线－＝1，其右焦点与抛物线y2＝16x的焦点重合，则e的值为

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文 中共有1O处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号( )，并在其下面写出该加的词。

删除：把多余的词用斜线(　）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1．每处错误及其修改均仅限一词；

2.只允许修改1O处，多者（从第11处起）不计分。

Union　is strength Whenever you're faced with difficulties or in a  dilemma ,cooperation plays an important part in getting you out of trouble

There was a time when I was too proud that I  overlooked my classmate . refusing to work together with them. Therefore .it was no doubt that I was left alone . suffering from loneliness and  failure. Unfortunately a teacher impressed on me the value of cooperation. From then  on ,I  learned to help others and turn to my friends for the help whenever I had difficulty finish a task  on my own. Surely cooperation made a great difference. Now I am getting well with my friend.

My experience has teach me that only if we attach  great importance with  cooperation can  we go beyond ourselves  As the saying go "United we stand ;divided we fall."

于焊接结构，除应限制钢材中的硫、磷的极限含量外，还应限制（）的含量不超过规定值。

生产中要求进风速度控制范围为（）。

挤压综合征发病机理的中心环节是()

A.肌肉缺血性坏死和肾缺血

B.肌红蛋白尿

C.高钾血症

D.缺血再灌注损伤

E.酸中毒

我们强调稳心颗粒改善心肌收缩力、增强心脏心脏功能，目的除了说明稳心颗粒适用于心力衰竭（心功能不全）外，还为了强调什么（）

A.有效性：活血化瘀，改善心肌缺血缺氧状态

B.有效性：调节神经功能

C.安全性：与西药相比，不降低心功能，不增加死亡率，反而改善心功能

D.有效性：调节多离子通道

E.安全性：不引起尖端扭转形室速