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慢性阻塞性肺气肿患者突感呼吸困难伴胸痛，首选的检查方法是（）
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链传动作用在轴和轴承上的载荷比带传动要小，这主要是因为()。
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乳发初起内治可选（）
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柜员客户服务流程八步法（）。
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Enids wedding dress arrived at five oclock in the evening: just seventeen hours before her marriage! "I must try it【C1】______, mother!" She cried, as she ran up stairs. Three minutes later Enids cries【C2】______her mother to her. The dress was much【C3】______big for her. It was baggy(鼓鼓囊囊的)in the front, and the neckline looked all wrong. Enid was in【C4】______. "Take it back to the dressmakers," Mrs. Bale said. "She must【C5】______it tonight. Hurry now. Take it off and go. " The dressmakers shop was closed. "CLOSED FOR ONE WEEKS HOLI DAY", said a【C6】______on the door. Fresh tears【C7】______to Enids eyes. She ran home again to her mother. "This is【C8】______," Mrs. Bale said. "But what are we going to do? Shall I ask Mrs. Peters to help? She was a dressmaker【C9】______. Im sure she could help. " Mrs. Peters was brought【C10】______and began work. She could see what was【C11】______. She had to take in a lot of material at the front, and that was a【C12】______job. Then she altered the neckline—in fact she made it【C13】______. At ten oclock the work was finished, and Enid put on the dress and found it【C14】______her beautifully. The three women were having a cup of tea【C15】______the doorbell rang. Mrs. Bale answered it and looked【C16】______the worried eyes of a plump(丰满的)young woman. The woman was carrying a large box. "Does Miss Enid Bale live here?" she asked【C17】______. "Yes, shes my daughter. " "Oh, Im glad Ive【C18】______you! There has been a【C19】______. Your daughter has my wedding dress, and Ive got hers. And Im getting married tomorrow!" She【C20】______out the box to Mrs. Bale.【C1】A．onB．withC．outD．in
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HSE管理体系中，危害是指可能造成（）、疾病、财产损失、工作环境破坏的根源或状态。
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中心投影法所绘制的图像又称为（）
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不符合家系图的是（）
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为特种设备生产、经营、使用提供检测服务的特种设备检测机构，经负责特种设备安全监督管理的部门核准，应当具备下列哪些条件，方可从事检验、检测工（）
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国历史上唯一一部具有资产阶级民主共和国性质的宪法性文件是（）