与方形补偿器相比,填料式补偿器的特点有()。A.轴向推力大 B.流体阻力大 C.易漏 发布时间:2017-06-14 19:40 │ 来源:www.tikuol.com 题型:多项选择题 问题: 与方形补偿器相比,填料式补偿器的特点有()。A.轴向推力大B.流体阻力大C.易漏水、漏气D.占地面积较小
题型:多项选择题 完形填空。 One night a man came to my house. He told me,"There is a family with eight 1 . They have not eaten for days."After I asked him where the family was. I took some 2 with me and left. When I finally got to that family, I 3 those little children were too hungry to say 4 . There was no food to the mother. She took half of it, and then 5 . When she returned, I asked her," 6 did you go?" She gave me this simple 7 ,"To my neighbors --- they are also 8 !" I was not surprised that she gave, because poor people are always very kind. But I was surprised that she knew her 9 were hungry. Usually, when we are in trouble, we always 10 ourselves first, and we have no time for others. ( )1. A. children ( )2. A. flowers ( )3. A. showed ( )4. A. a sentence( )5. A. went out ( )6. A. When ( )7. A. question ( )8. A. ill ( )9. A. people ( )10. A. think of B. workers B. wine B. watched B. a word B. came back B. Where B. decision B. unhappy B. neighbors B. talk about C. farmers C. food C. looked C. it C. rushed in C. How C. answer C. tired C. family C. laugh at D. cooks D. water D. found D. nothing D. hurried back D. Why D. lie D. hungry D. children D. look for 查看答案
题型:多项选择题 某企业准备购入一台设备,现有A、B两个备选方案,预计使用年限均为4年,期满均无残值。两个方案的投资额和每年预计实现的净现金流量如下表所示。要求:(1)计算两个方案的投资回收期; (2)计算两个方案的平均报酬率; (3)根据上述计算结果,比较两个方案的优劣。 (计算结果保留小数点后两位) 查看答案