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试述四柱万能液压机的结构？

答案

参考答案：

①四柱万能液压机由主机和动力机构两大部分组成

②主机部分包括机身、主缸、顶出缸三部分

③动力机械在机身侧面，主要由油箱、泵阀、管路等液压元件组成

填空题

2007年11月26日，中国国家航天局正式公布了“嫦蛾一号”卫星传回的第一幅月面图象（如图所示），标志着中国首次月球探测工程取得成功．这幅月面图象是“嫦蛾一号”搭载CCD立体相机拍摄并由电子设备通过 _________波将图像数据传回地面应用系统的．
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问答题

When I saw the notice "Women film extras wanted" in a local newspaper, I jumped at the chance. Since childhood, I had dreamt of being a film star. The casting interview went well, and two clays later I was told that I had been chosen. I was to lose some of my enthusiasm for the idea, however extras are often left in the dark for some time as to which role they will play. Finally , the nature of my role was revealed: I was asked to play a mental hospital patient. Despite my disappointment, I agreed to participate. Then, barely a week later, the day of filming dawned. An 13 of us extras, mainly housewives, were driven to an old hospital. The coffee and tea they served us looked and tasted like cement. Then we were rushed off to make-up. My hair was pinned back and make-up was applied that gave me a pale appearance. Then we just sat in a minibus for a few hours, as the cameras rolled elsewhere.
After the second hour had passed I was becoming bored. I bet stars are never treated like this, I thought. I had expected to be so busy that I hadn’t come prepared for a long wait. Many of the others had brought a book or knitting.
Three hours had now passed. Then at last we were called to do our scenes. When the director came in, we were instructed where to stand and what to do. Along with a few others, I was told to sit at a table and weave baskets. This was not an easy task. The cane (藤条)we had to use was very long. On several occasions my basket fell apart in front of my very eyes. On others I only succeeded in hitting a cameraman in the eye.
Life for the other extras was far from easy. Jean, who was barefoot, had to circle the floor. Poor Alice was asked to pretend to bang her head against the wall. Meanwhile, Veronica swept the floor.
Thankfully, after just a few attempts, the scenes were done. And so my first taste of this" glorious" career was over. Although I found the experience quite interesting. My first screen role will almost certainly be my last.
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