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视图是一种虚拟的表，具有和物理表相同的功能。可以对视图进行增，改，查，操作，视图通常是有一个表或者多个表的行或列的子集。
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孕妇李某,末次月经2020年2月20日,现妊娠38周,四步触诊法检查结果为宫底是圆而硬有浮球感的胎儿部分,耻骨联合的上方为软而宽、形态不规则胎儿部分,胎背位于母体腹部右侧。孕妇的预产期是( )
某孕妇,孕36周行产前检查时确定其为肩先露,胎心音听得最清楚的部位是
某孕妇现孕30周,长时间仰卧后,出现血压降低、心率加快、面色苍白等症状。出现这种情况的主要原因是( )
Fill in the blanks with the words given below. Change the form where necessary. Each word can be used only once.maintain prestige whereby nominate inhibitpatriotic pursuit dedicationendeavor transcend1. Most cities in the country have introduced "Clean Air Zones"______factories and households are only allowed to burn smokeless fuel.2. He knows that the______of social status can consume vast amounts of his time and effort.3. The doctors are at a loss because so far no medicine has been found to______the spread of the disease.4. We see many special education directors trying to______the quality of their programs with much less money and much smaller staff.5. People there are told it is their______duty to support the national economy by buying their own products.6. Darwin's thinking both drew upon and______the conventional ideas of his time.7. In spite of all your______, there may be times when you encounter difficulties in the training process.8. My advice to Mr. Stewart is to think carefully before entering into a career in medicine, as this is a field which requires a lot of______and long working hours.9. Most Chinese parents would prefer to choose some professions that are stable and could bring______and economic benefits.10. It is legally possible for an elderly person to______someone to act for them, should they become incapable of looking after themselves.
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