在目前运行的大型压水堆核电厂中主要采用（）作为主循环泵。 A.轴密封 B.全密封 C

（8分）生物的生存需要一定的环境条件,请在横线上写出以下资料中影响生物生活的环境因素。

（1）兰花种在荫棚下，芒果树喜欢“晒太阳”。             

（2）鸡能够在短期内忍受零下40度的低温约3小时。             

（3）某健康杂志指出，人每天要喝八杯水才足够。             

（4）捕虫灯能诱杀昆虫。             

善于治疗黄疸、胸胁胀满等肝胆疾病的腧穴是（）。

A.太冲

B.足三里

C.阳陵泉

D.至阳

E.期门

“一坡三挡”中的上部挡车栏设在变坡点下方（）处。

A.10m 

B.15m 

C.略大于一列车长度的地点 

D.20m

热转移贴标设备电控部分的作用不包括（）

A、对制品进行表面处理

B、准确走标

C、使压头对制品准确定位

D、传送制品

This book is written expressly for students in an attempt to present the material that is most useful and interesting to them. Previous courses in chemistry are not necessary for the understanding of the material, although those students who have had high school chemistry will find that a review of the inorganic section will better enable them to master the organic and biochemistry sections that follow.

The author has felt that in the past there was an improper selection of material from inorganic, organic, and biochemistry in the majority of the textbooks of chemistry for nurse. The tendency has been to develop the inorganic chemistry to such an extent that organic and biochemistry is covered too briefly. The recent advances in biochemistry and their widespread application to the practice of medicine and nursing have considerably altered the situation. Not only is biochemistry more closely allied to the practical chemistry of medicine and nursing but also it is of more interest to the student. In the author’s experience the response to biochemistry has always been more favorable than to the other sections. Within the brief period allotted to chemistry, therefore, the sections on inorganic, organic, and biochemistry should be so arranged that a good share of the time is spent in the study of biochemistry. This book presents mainly those fundamentals of inorganic and organic chemistry that are necessary for the understanding of the section on biochemistry.

The fundamental points suggested in the Curriculum Guide are included in the book, with some additions in the biochemistry section. The author feels that a study of urine, vitamins, nutrition, and hormones is so obviously a part of biochemistry that at least the fundamentals should be included in this course.

The book has been planned in such a way that it may be adapted to various courses in chemistry. The material suggested by the Curriculum Guide is covered in the first nineteen chapters and may be used in accelerated courses or where minimum time is allotted to chemistry. When the time allotted to the course is sixty to ninety hours, the entire contents of the book may be used to advantage. While the book has been written especially to fit the needs of Schools of Nursing, it could readily be applied in instances where students are required to take but one course in chemistry.

The apathetic attitude of nonprofessional students toward a course in inorganic chemistry may well be overcome by the proper presentation of material selected from inorganic, organic, and biochemistry.

Which of the following is TRUE about reading the book（）

A. One must first review his high school courses

B. Previous courses in chemistry are necessary

C. A good mastery of biochemistry is essential

D. One needn’t have studied chemistry before