实际进度与计划进度图形的跟踪比较方法有( )。A．进度前锋线法 B．横道图比较法 发布时间：2022-08-20 01:03 │ 来源：www.tikuol.com 题型：多项选择题 问题： 实际进度与计划进度图形的跟踪比较方法有( )。A．进度前锋线法B．横道图比较法C．S形曲线比较法D．排列图法E．香蕉线曲线比较法
题型：多项选择题 完形填空。先通读短文，掌握其大意，然后从A、B、C、D四个选项中选出一个可以填入相应空白处的最佳答案，并将其标号填入题前括号内。 Now satellites are 1 to forecast (预报) the weather. They are in space, and they can 2 any part of the world. The satellites take pictures of the atmosphere (大气), 3 this is where the weather forms (形成). They send these 4 to the weather stations. So meteorologists (气象学家) can see the weather of any part of the world. From the pictures, the scientists can often say 5 the weather will change. Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive newpictures, the meteorologists compare them with earlier 6 . Perhaps they may find that the clouds have changedduring the last few hours. This may mean that the 7 on the ground may soon change, too. In their next weatherforecast, the meteorologists can say this. So the weather satellites are a great 8 to the meteorologists. 9 satellites were invented, the scientists couldforecast the weather for about 24 or 48 hours. Now they can make good forecasts for three or five days. Soon,perhaps, they may 10 forecast the weather for a week or more ahead (提前). ( ) 1. A. help ( ) 2. A. reach ( ) 3. A. so ( ) 4. A. satellites ( ) 5. A. that ( ) 6. A. it ( ) 7. A. clouds ( ) 8. A. report ( ) 9. A. Before ( ) 10. A. can B. to help B. arrive B. because B. pictures B. for B. one B. weather B. luck B. After B. be C. helped C. get C. even C. weather C. where C. ones C. pictures C. helpful C. Since C. be able to D. helping D. go D. and D. space D. how D. them D. trees D. help D. If D. could 查看答案
题型：多项选择题 下列有关操作系统的叙述中，哪一条是不正确的A．操作系统管理计算机系统中的各种资源B．操作系统为用户提供良好的界面C．操作系统与用户程序必须交替运行D．操作系统位于各种软件的最底层 查看答案