分解因式(1)ax4-16a;(2)(x2 —5)2- 8(x2 —5)+16

题型:解答题

问题:

分解因式(1)ax4-16a;(2)(x2 —5)2- 8(x2 —5)+16

考点:整式的定义整式的加减单项式多项式同类项
题型:解答题

在进行机组车辆等大型设备的评标时,以设备投标价为基础,将评定各要素按预定的方法换算成相应的价格,在原投标价上增加或扣减该值而形成评标价格,此种评标方法是 ( )。

A.全寿命费用评标价法

B.综合评标价法

C.百分评定法

D.最低投标价法

题型:解答题

The naughty boy, who starved________a CD, said seriously to his father that he would starve

________death rather than give up his demand.[      ]

A. after;to  

B. for;to

C. about;until  

D. for;till

题型:解答题

Good health is the most valuable thing a person can have but one cannot take good health for granted .It is important to remember that the body needs proper care in order to be healthy. There are three things that a person can do to help stay in good shape, eat right food, get enough sleep, and exercise regularly.

Proper nutrition  is  important for good  health.  Your body cannot work well unless  it receives the proper kind“fuel".Don't eat too much food with lots of sugar and fat, Eat plenty of foods high in protein, like meat fish eggs and nuts. Vegetables and fruits are very important because they provide necessary vitamins and minerals.  However  don't overeat It is not helpful to be overweight

Getting the proper amount of sleep is also important.  If you don't get enough sleep, you feel tired and easily get angry. You have no energy. Over a long period of time a little amount of sleep may even result In a change of personality(人的个性).Be sure to allow yourself from seven to nine hours of sleep each ,If you do, your body will feel strong and refreshed ,and  your mind will be sharp.

Finally, get plenty of exercise Exercise firms the body, strengthens the muscles, and prevents you from gaining  weight  It also improves your heart and lungs. If you follow a regular exercise program, you will probably increase your life-span(寿命).An kind of exercise is good. Most sports excellent for keeping the body in good shapes: basketball, swimming, bicycling, running and so on. Sports are not only good for your body, but they are enjoyable and interesting, too.

If everybody were to eat the right foods, get plenty of sleep and exercise regularly, the world would be a happier and healthier place. We would all live to be much older and wiser.

小题1:In order to keep good health______.

A.we should eat a lot of sweets

B.one needs a large amount of fat

C.we must try to sleep now and then

D.people should eat according to the foods nutrition小题2:Eating more and sleeping less_______.

A. can keep healthy

B. is no good for you

C. gets you more energy

D. will keep your personality小题3:The writer explains ________in the 4th paragraph.

A. how to eat

B. what to eat

C. how to keep healthy

D. the importance of doing exercise小题4:The title for the article should be“_______".

A. Eating and Exercising

B. How Vitamins Work in Man's Body

C. Staying Healthy

D. Sleeping Well

题型:解答题

下列哪项是降低肺源性心脏病肺动脉高压的首选治疗是()

A.氧疗

B.支气管扩张剂

C.利尿剂

D.呼吸兴奋剂

E.强心剂

题型:解答题

19世纪60年代洋务派开展洋务运动。洋务派认为“自强以练兵为要,练兵以制器为先”。在洋务运动中能体现“制器为先”的是______。

A.江南制造总局

B.开平矿务局

C.汉阳铁厂

D.上海轮船招商局

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