-2πab25的系数是______,次数是______.

题型:填空题

问题:

-
2πab2
5
的系数是______,次数是______.
考点:单项式
题型:填空题

每个包装物的高度和毛重有何要求

题型:填空题

完形填空。

A man was walking along the street when he saw a woman struggle(奋力)with a large box. It was half in and half 1______ of her car. He was a helpful kind of man, so he went up to the woman and said, “Let me give you a hand with that box. It looks very 2______.”

“That’s very kind of you,” the woman said. “I’m having a lot of 3______ with it. I think it’s struck(卡住).”“Together we’ll soon move it,” the man said. He 4______ into the back seat of the car and took hold of the other end of the box. He said, “I’m ready.” And he began to 5______ hard.

For several minutes the man and the woman struggled with the box. Soon they were 6______ in the fact. “Let’s rest for a minute,” the man said. “I’m sorry, but it 7______ stuck.” A few minutes later, the man said, “Let’s try again. Are you ready?” 8______ of them took hold of the box again. “One, two, three!” the man said, and they went on with their struggle.

At last, when they were very tired, the man said, “You are 9______. It really is stuck. I don’t think there’s 10______ we can get it out of the car.”“Get it out of the car!” The woman cried. “I’m trying to get it in!”

1. A. in        B. out         C. on         D. off

2. A. heavy     B. strong      C. dear        D. new

3. A. trouble    B. questions    C. matter     D. accidents

4. A. got       B. stepped     C. came       D. walked

5. A. pull       B. carry       C. push       D. lift

6. A. white     B. tired        C. red        D. hurt

7. A.goes      B. falls         C. grows     D. seems

8. A. Every     B. All        C. Either      D. Both

9. A. ready     B. right        C. clever      D. sure

10. A. anything  B. anywhere   C. any one     D. any way

题型:填空题

菱形ABCD中,若周长是20cm,对角线AC=6cm,则对角线BD=______cm.

题型:填空题

阅读下面的文字,按要求做题。

  2008年我国发生的低温雨雪冰冻灾害实属历史罕见。灾害天气从1月中旬到2月上旬,持续了近一月的时间;湖南、湖北、贵州、云南、四川、重庆、江苏、安徽、浙江、福建和广东等地受灾,范围遍及中国南方各省;此次灾害给电力和交通运输带来了很大破坏,给人民群众生命财产和工农业生产造成重大损失,直接经济损失达1111亿元人民币。    

  请从三个方面概括今年南方低温雨雪冰冻灾害的特点。(包含标点符号不超过17个字)

_____________________________________________________

题型:填空题

下列关于建设项目财务评价时,反映企业偿还短期债务能力指标与比率的说法,正确的是,
( )。

A.流动比率,一般为2:1较好

B.流动比率,一般为1:2较好

C.速动比率,一般为2:l较好

D.速动比率,一般为1:2较好

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