问题
判断题
柱塞上冲程过程中游动阀打开,固定阀关闭。
答案
参考答案：错
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柱塞上冲程过程中游动阀打开,固定阀关闭。
参考答案：错
| 完形填空。 | ||||
| Thomas Edison wore __1__ caps during his life, __2__ thinking caps, the caps of many famous schools and colleges. But the most important cap was his thinking cap. It had saved his mother's __3__. One day when he was a boy his mother fell ill. The doctor wanted __4__ her an operation (手术). But the light in the room was not bright. Edison quickly __5__ his thinking cap and he found a way __6__ his mother. Edison was good at __7__ his hands and his head. He was the most interested __8__ electricity. We can see his __9__ everywhere because they are very common. They were __10__ by Edison's thinking cap. | ||||
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