问题
填空题
YZ-35型牙轮钻机接卸钻具时，用油马达比用（）更安全可靠。
答案
参考答案：电动机
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YZ-35型牙轮钻机接卸钻具时，用油马达比用（）更安全可靠。
参考答案：电动机
Mike always loves ships(轮船). When he was a child, he said, “I’m going to a naval soldier (海军士兵) when I grow up.” But his eyes were not very , so he could not join the navy(军队). Then he said, “I’m going to a ship and travel around the world.” But ships were very expensive, and Mike did not have enough . Last summer Mike found a swimming . He didn’t have to much for the lessons, so he began going to the school on weekends. Now he is a good swimmer. Last week a little boy said to him, “You’re a very good swimmer. do you learn to swim so well?” “I’m not good at all,” Mike said. “ I’m in the water, I say to myself, “There are fishes behind me!” Then I’m very afraid (害怕的), and I quickly.”
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