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题目：
多选题
A二尖瓣狭窄
B二尖瓣关闭不全
C主动脉瓣狭窄
D主动脉瓣关闭不全
E高血压
答案：
<查看本题扣1积分>
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衡量水电站计算机监控系统性能主要有哪些指标？
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在行政管理活动中，最重要的环节是（ ）。
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导指派你带领单位的10个团员青年到社区做义务普法员，你准备怎样完成这项任务？
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小儿10个月，方颅，多汗，胸骨肋膈沟，血钙正常，血磷低，X线可见骨骺软骨增宽，干骺端临时钙化带模糊，并呈毛刷状改变，诊断为（）
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螺旋桨的“沉深比”是指：（）
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有关蔓状血管瘤的叙述哪项错误（）
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English has never been the only language in use over the British Isles , and it certainly is not now! Welsh is still used in Wales. Some Welsh people still speak it as their mother tongue , and it is widely taught in Welsh schools. Some people in Scotland and in Ireland still use a language that is related to Welsh. It is called Gaelic. These languages have a long history in these islands - longer than the history of English. In addition , people fromoverseas have settled in England quite recently during this century. In some industrial cities , though not generally in Britain , you find groups of people who speak Polish , and other groups speaking the languages of the Indian subcontinent. A survey of North London schools in the early 1980' s found that nearly a third of the children spoke a language other than English at home.The majority of the 55 million people living in England use English all the time. Standard English , that is , written English , is in use throughout Britain. Spoken English , however , sounds very different in different parts of the country. There is a story , a play. by the famous writer George Bernard Shaw , about a professor of English Language who can tell you someone' s address when he hears that person speak! That is exaggeration of course. Not even a Professor , who has studied the sounds of English all his life , can really do that. However ,it is true hat most people who have lived for a long time in Britain can tell a number of things about the people as soon as they speak! Usually we cannot tell the speaker' s address, but we can guess the part of the country where the person comes from. We can tell how well educated he or she is too! If an international user of English , like anyone of you here , happens to meet speakers from , say , the North or the West of England , you may find them hard to understand. Unless you understand what is going on your confidence in your ability to use the language may be badly shaken.36. Gaelic is related to Welsh. ( )37. Welsh is not taught in schools anymore. ( )38. One third of the 55 million people in England speak other languages besides English at home ( )39. Written English is in use throughout Britain but spoken English sounds different in different parts of the country. ( )40. Most people who have lived for a long time in Britain can tell how well educated a person is by the way he/ she speaks. ( )
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MRI具有极好的软组织分辨力，无骨质伪影。
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森林对生态环境的保护作用，主要体现在()等。A.大气平衡B.水土涵养C.防止水土流失D.降低温度E.减轻污染
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下列属于吊顶工程质量通病的有（）