北京市A企业，与上海市的B企业有业务往来。一天，A通过邮局将一份重要邮件寄给B，现该邮件没能及时送达B，因此事给A造成了价值30万元的经济损失。

若A企业就损失赔偿与邮政企业发生争议，A企业可以( )。

A:要求邮局必须赔偿30万元 B:要求邮局的上级主管部门处理 C:直接向人民法院起诉 D:要求邮局必须在一周内提出解决方案

某大型物资管理部门打算实行仓库物流的自动化，可实施的方案有两个，这两个方案都可以达到仓库物流自动化的目标。但是，两方案初期投资额,年作业费用及寿命期不同（如下表所示）。基准收益率为12%。 已知 （P/A，12%，7）=4.564 （P/A，12%，13）=6.424 （A/F，12%，7）=0.09912 （A/F，12%，13）=0.03568 根据题意，回答下列问题：

A方案的费用年值是( )万元。

A:75.44 B:76.86 C:82.52 D:86.55

某大型物资管理部门打算实行仓库物流的自动化，可实施的方案有两个，这两个方案都可以达到仓库物流自动化的目标。但是，两方案初期投资额,年作业费用及寿命期不同（如下表所示）。基准收益率为12%。已知(P/A,12%,7)=4.564,(P/A,12%,13)=6.424,(A/F,12%,7)=0.09912,(A/F,12%,13)=0.03568。 根据以上资料，回答下列问题：

A方案的费用年值是( )万元。

A:75.44 B:76.86 C:82.52 D:86.55

当用增量编程GOO指令时，U，W后面的数值是（）点与目标点之间的距离与方向。

A:零点 B:当前 C:已知 D:未知

当用绝对编程GOO指令时，X，Z后面的数值是（）位置在工件坐标系的坐标值。

A:测量 B:目标 C:参考 D:起点

GOO是指令刀具以（）移动方式，从当前位置运动并定位于目标位置的指令。

A:点动 B:走刀 C:快速 D:标准

D. When asked about happiness,we usually think of something extraordinary, an absolute delight,which seems to get rarer the older we get. For kids,happiness has a magical quality.Their delight at winning a race or getting a new bike is unreserved(毫不掩饰的). In the teenage years the concept of happiness changes.Suddenly it’s conditional on such things as excitement,love and popularity.I can still recall the excitement of being invited to dance with the most attractive boy at the school party. In adulthood the things that bring deep joy----love,marriage,birth----also bring responsibility and the risk of loss.For adults,happiness is complicated(复杂的) My definition fo happiness is “the capacity for enjoyment”.The more we can enjoy what we have,the happier we are.It’s easy to overlook the pleasure we get from the company of friends,the freedom to live where we please,and even goo health. I experienced my little moments of pleasure yesterday.First I was overjoyed when I shut the last lunch-box and had the house to myself.Then I spent an uninterrupted morning writing,which I love.When the kids and my husband came home,I enjoyed their noise after the quiet of the day. Psychologists tell us that to be happy we need a mix of enjoyable leisure time and satisfying work.I don’t think that my grandmother,who raised 14 children,had much of either.She did have a network of close friends and family,and maybe this is what satisfied her. We,however,with so many choices and such pressure to succeed in every area,have turned happiness into one more thing we’ve got to have.We’ve so self-conscious about our “right” to it that it’s making us miserable.So we chase it and equal it with wealth and success,without noticing that the people who have those things aren’t necessarily happier Happiness isn’t about what happens to us----it’s about how we see what happens to us.It’s the skillful way of finding a positive for every negative.It’s not wishing for what we don’t have,but enjoying what we do possess.What can we learn about the author from Paragraph 5 and 6

A:She cares little about her own health B:She enjoys the freedom of traveling C:She is easily pleased by things in daily life D:She prefers getting pleasure from housework

D. When asked about happiness,we usually think of something extraordinary, an absolute delight,which seems to get rarer the older we get. For kids,happiness has a magical quality.Their delight at winning a race or getting a new bike is unreserved(毫不掩饰的). In the teenage years the concept of happiness changes.Suddenly it’s conditional on such things as excitement,love and popularity.I can still recall the excitement of being invited to dance with the most attractive boy at the school party. In adulthood the things that bring deep joy----love,marriage,birth----also bring responsibility and the risk of loss.For adults,happiness is complicated(复杂的) My definition fo happiness is “the capacity for enjoyment”.The more we can enjoy what we have,the happier we are.It’s easy to overlook the pleasure we get from the company of friends,the freedom to live where we please,and even goo health. I experienced my little moments of pleasure yesterday.First I was overjoyed when I shut the last lunch-box and had the house to myself.Then I spent an uninterrupted morning writing,which I love.When the kids and my husband came home,I enjoyed their noise after the quiet of the day. Psychologists tell us that to be happy we need a mix of enjoyable leisure time and satisfying work.I don’t think that my grandmother,who raised 14 children,had much of either.She did have a network of close friends and family,and maybe this is what satisfied her. We,however,with so many choices and such pressure to succeed in every area,have turned happiness into one more thing we’ve got to have.We’ve so self-conscious about our “right” to it that it’s making us miserable.So we chase it and equal it with wealth and success,without noticing that the people who have those things aren’t necessarily happier Happiness isn’t about what happens to us----it’s about how we see what happens to us.It’s the skillful way of finding a positive for every negative.It’s not wishing for what we don’t have,but enjoying what we do possess.What can be concluded from the passage

A:Happiness lies between the positive and the negative B:Each man is the master of his own fate C:Success leads to happiness D:Happy is he who is content

This lecture will give you advice on how to stay healthy. It will cover ten ways to stay healthy.
First, exercise every day. Exercise will help you to maintain your weight. It will also help you to prevent health problems such as cancer and heart disease. Finally, exercise makes you feel good! So get a little exercise every day.
Second, get enough sleep. Most people don’ t get enough sleep. But sleep helps you to think clearly and do good work. Your body needs to rest. Then you have energy to do your best. So try to sleep at least seven or eight hours every night.
Third, eat green things. All green food is good for you. For example, spinach, broccoli, green beans, artichokes, kale, cabbage, green apples, and grapes. Fruits and vegetables are very important to your health. So eat some green things today!
Fourth, don’t smoke. Smoking causes cancer and other diseases. It can hurt your friends and family when you smoke. It costs a lot of money. So don’ t smoke.
Fifth, don’ t drink a lot of alcohol. Alcohol can cause a lot of problems. Many car accidents are caused by alcohol. Alcohol can make you overweight. So drink a little if you like, but don’ t drink a lot.
Sixth, wear a seat belt. Many people are injured or killed because they aren’t weanng a seat belt. Don’ t drive with anyone who is not wearing a seat belt. And make sure your passengers are all wearing a set belt before you drive. Buckle up!
Seventh, drink lots of water. Everyone should drink 6 - 8 glasses of water every day. Your body needs water to work well. Water also has no calories. People who dIjnk a lot of water don’ t feel as hungry. So drink up!
Eighth, visit your doctor for regular checkups. During a checkup your doctor can give you tests and check your health. Many serious health problems are found during a regular checkup. So don’ t go to the doctor only when you are sick. See the doctor once a year for a checkup.
Ninth, reduce stress. Stress causes many serious health problems. It affects your personal and professional lives. Try to have less stress in your life. Relax more! Stress less.
Tenth, spend time with friends and family. We all need to enjoy our life with others. Your friends and family will make you feel good. If you feel good, you will stay healthy! So make time for your loved ones.
According to the passage, exercise can help you do an the following but

A:maintain your weight. B:prevent health problems. C:stay in good mood. D:Look goo

The primary consideration in achieving a good balanced diet is not how much or how little we eat, but what we eat. Basically we need carbohydrates, protein, fat, vitamins and minerals, together with regular but not excessive exercise.
Carbohydrates are found in foods such as bread, potatoes and sugar. They are excellent energy producers, but if eaten to excess may be largely converted to fat and a reduction in the amount of carbohydrates or "starchy" foods is one of the obvious Ways to reduce weight, since most of us eat too much of them anyway.
According to the paragraphs, carbohydrates

A:provide us with energy. B:are the main source of fat in the body. C:exist in all kinds of food. D:can make us feel goo