抽油机游梁的作用是什么?
参考答案:
游粱固定在支架上,前端安装驴头承受井下负荷,后端连结横船、连杆、曲柄、减速箱传递电动机的动力。
Everybody dreams. Some people think dreams can tell us about the future. Other people think dreams can tell us about ourselves. It’s like our (11) is talking to us. Why are dreams (12) strange and hard to understand Some people think our brain uses (13) to talk to us. When we fly, swim, or fall down in our dreams, it has a (14) meaning. Lots of doctors help people (15) their dreams. They find that dreams tell us about our (16) and fears. These days, many scientists (17) that dreams are very important. During the day, we have many (18) , and our brain receives a lot of information. When we dream, our brain (19) information that is not important, and puts the most important information into our (20) . As we learn more about the brain, we may find answers to our questions about dreams.
Ⅰ. 完形填空
A.passes on
B.looks into
C.throws away
D.asks for
贸易通平台是()等贸易融资类产品的综合管理平台。
A.纸质商业汇票
B.电子商业汇票
C.国内信用证
D.银行汇票