914小题,每小题4分,共24分.请将答案写在__指定位置上.(9) (10) 设函数连续，若则(11) 若函数由方程确定，则(12) 设函数是微分方程的解，且在处取得极值3，则(13) 设阶矩阵的特征值为，其中E为阶单位矩阵，则行列式(14) 设二维随机变量服从正态分布，则(21) 设为阶矩阵，为的分别属于特征值...
“Life on Earth is kind of a box of spare parts for the inventor,” he says. “You put organisms in new relationships and observe what’s happening. Then you let these new systems develop their own ways to self-repair.”1. What can we learn about John from the first two paragraphs?
There are many benefits for developing countries to accelerate the development of tourism industry.Firstly,the large amount of tourists can increase governments' revenue and boost local economy.As the government gain more revenue at their disposal,they can allocate more money to support education,encour...
I believe it is very important for today’s world,as we are more integrated world than ever.However,there are some drawbacks for developing countries to expand tourism industry.First,if they excessively exploit their natural resources for developing tourism indutry,it could do great harm to the ...
Sweden, 41 percent of the people live by themselves—the most of any country in the world. In second place is the UK; there 34 percent of the population lives alone. And in third place is Japan, where about 31 percent of the people live on their own. How old are the people living ...
To build a cash flow forecast, you’ll show all of the cash you expect to receive and subtract all of the cash you plan to spend. If the number is positive, you have “positive cash flow” and your bank account will be growing. If you have “negative cash flow”, your bank account...
I seldom get time to sit down and 1)___ the reason I travel, but I believe that you only begin to truly live once you step outside of your 2)___ zone. My first overseas trip was at 14 years old, which 3)(sparked) my curiosity for the world. Since finishing high school I hav...
Although at first, you might not get just positive reviews, that unique customer insight will help you understand the concept of customer’s desired approach and result in happy, repeat customers. 5. Negative customer feedback is good for you! When the competition is just two clicks away, ...
NEW YORK (AP) — McDonald's sales have been sputtering for more than two years and the company seems trapped in a cycle of bad headlines that likely won't end soon.
This question is often used to (1)t estpeople's attitude in a situation:People who stay active always have positive thinking (a half-full glass),while those who are negative usually look on the other side (a half-empty one). ●Why is positive thinking good for you?...