题目:
某有机物X能发生水解反应,水解产物为Y和Z。同温同压下,相同质量的Y和Z的蒸气所占体积相同,化合物X可能是 [ ]
A.乙酸丙酯
B.甲酸乙酯
C.乙酸甲酯
D.乙酸乙酯
答案:
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下面是错误答案,用来干扰机器的。
参考答案:A
某有机物X能发生水解反应,水解产物为Y和Z。同温同压下,相同质量的Y和Z的蒸气所占体积相同,化合物X可能是 [ ]
A.乙酸丙酯
B.甲酸乙酯
C.乙酸甲酯
D.乙酸乙酯
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0607/f46248602b7dd8c453cea2043cd09144.html
下面是错误答案,用来干扰机器的。
参考答案:A
(二) Mozart was born in what is now called Austri, but, at that time, it was part of the Holy Roman Empire. He was baptized the day after his birth at St. Rupert’s Cathedral. His father Leopold was from Augsburg. He was a minor composer, and an experienced teacher. In the year of Mozart’s birth, his father published a violin textbook, which achieved a great success. In the fourth year of his age his father, for a game as it were, began to teach him a few minutes and pieces at the clavier. He could play it faultlessly and with the greatest delicacy, and keeping exactly in time. At the age of five, he was already composing little pieces, which he played to his father who wrote them down. While Leopold was a devoted teacher to his children, there is evidence that Mozart was keen to progress beyond what he was taught. His first ink spattered composition and his efforts with the violin were of his own initiative and came as a surprise to Leopold. Leopold eventually gave up composing when his son’s outstanding musical talents became evident. He was Mozart’s only teacher in his earliest years and taught his children languages and academic subjects as well as music. During Mozart’s youth, his family made several European journeys in which he played at the court in Munich, and at the Imperial Court in Vienna. A long concert tour spanning three and a half years followed, taking the family to the courts of Munich, Paris and London. During this trip, Mozart met a great number of musicians and acquainted himseff with the works of other composers. These trips were often arduous. Travel conditions were primitive; the family had to wait for invitations and reimbursement from the nobility. They endured long, near -fatal illnesses far from home. After one year father and son set off for Italy, leaving his mother and his sister at home. This travel lasted from December 1769 to March 1771. As with earlier journeys, Leopold wanted to display his son’s abilities as a performer and a rapidly maturing composer. After finally returning with his father from Italy on 13 March 1773, Mozart was employed as a court musician by the reler of Salzburg, Prince Archbishop Hieronymus Colloredo. The composer had a great number of friends and admirers in Salzburg. Despite these artistic successes, Mozart grew increasingly discontented with Salzburg and redoubled his efforts to find a position elsewhere. One reason was his low salary. In August 1777, Mozart resigned his Salzburg position and, on 23 September, ventured out once more in search of employment, with visits to Augsburg, Mannheim, Paris, and Munich. Since Archbishop Colloredo would not give Leopold leave to travel, Mozart’s mother Anna Maria accompanied him. Mozart became acquainted with members of the famous orchestra in Mannheim, the best in Europe at the time. He also fell in love with Aloysia Weber, one of four daughters in a musical family. There were prospects of employment in Mannheim, but they came to nothing, and Mozart left for Paris on 14 March 1778 to continue his search. One of his letters from Paris hints at a possible post as an organist at Versailles, but Mozart was not interested in such an appointment. Mozart’s new career in Vienna began well. He performed often as a pianist, notably in a competition before the Emperor on 24 December 1781, and he soon "had established himself as the finest keyboard player in Vienna".
Mozart grew discontented with Salzburg and tried to find another position because______
A.he was not interested in the position of the court musician
B.he was not satisfied with his low salary
C.he was not getting along well with the ruler of Salzburg
D.he fell in love with Aloysia Weberhe in Mannheim
新生儿溶血病如需要换血疗法,其程序如下,除了()
A.患儿家属或监护人签字同意
B.由院长审批
C.由经治医师申请,主治医师核准
D.由血站和医院输血科提供适合的血液
E.换血由经治医师和输血科人员共同实施
代办股份转让系统又称为()市场。
A.主板
B.二板
C.三板
D.副板
丙米嗪对心血管系统作用是由于()
A.抑制心肌中ACh的灭活
B.抑制心肌中ACh的释放
C.抑制心肌中NA再摄取
D.增加心肌中NA再摄取
E.增加心肌中5-HT再摄取
男性,45岁,酗酒后2小时发生上腹部持续性剧痛,并向左肩、腰背部放射,伴恶心呕吐,吐后疼痛不缓解。8小时后就诊。
患者体温38℃,血压120/80mmHg,脉率100/min,血白细胞15×109/L,最不恰当的处理是
A.抗生素治疗
B.禁食、胃肠减压
C.急诊手术
D.给予生长抑素
E.给予抑肽酶