适应于肺泡与外界空气之间进行气体交换的结构是（） A.鼻腔内有鼻毛 B.气管、支气管 发布时间：2018-05-30 06:11 │ 来源：www.tikuol.com 题型：单项选择题 问题： 适应于肺泡与外界空气之间进行气体交换的结构是（）A.鼻腔内有鼻毛B.气管、支气管都有软骨支架C.肺泡壁由一层上皮细胞构成D.肺泡外包绕着丰富的毛细血管
题型：单项选择题 阅读理解。 Once upon a time, there lived a rich man. He had a servant (仆人). He and the servant loved wine and good food very much.. Each time the rich man left his home, the servant would drink the wine and eat upall the nice food in the house. The rich man knew what his servant did, but he had never caught his servantdoing that. One morning, when he left home, he said to the servant, "Here are two bottles of poison and some nicefood in the house. You must take care of them." With these words, he went out. But the servant knew what the rich man had said was untrue. After the rich man was away from his home,he enjoyed a nice meal. Because he drank too much, he was drunk and fell to the ground. When the rich man came back, he couldn't find his food and his wine. He became very angry. He woke the servant up. But the servant told his story very well. He said a cat had eaten up everything. He was afraid to be punished, so hedrank the poison to kill himself. 1. In the story, ______ liked wine and good food very much. [ ]A. the rich man B. the servant C. both A and B D. neither A and B 2. The rich man knew that it was ______ that drank the wine and ate up all the nice food. [ ]A. the cat B. himself C. nobody D. the servant 3. The rich man told the servant that there was poison in the two bottles, because ______. [ ]A. there was poison in the bottles B. he did not want the servant to drink his wine C. he wanted to kill the cat D. he wanted to kill the servant 4. In fact, ______ ate all the nice food and drank the wine. [ ]A. the servant B. cat C. the rich manD. nobody 5. From the story, we know that the servant is very ______. [ ]A. lazy B. helpful C. clever D. kind 查看答案
题型：单项选择题 严格执行钻具检查制度，检查的主要内容有（）。A．开钻前对所有钻具进行检查，不合格的要求更换B．重大事故处理后进行检查，对不合格钻具进行更换、调整C．钻具的长度是否一样D．每次起、下钻具要检查其磨损和弯曲程度 查看答案