输血发生超敏反应，患者出现过敏性休克，血压为零时，处理原则首先为（）
A.减慢输血速度，给予苯海拉明
B.立即静脉补充液体
C.尽早行气管切开
D.立即停止输血，给予肾上腺素
E.立即口服异丙嗪
参考答案：D
解析：出现过敏反应时应立即停止输血，保持静脉输液通畅，可肌肉内注射异丙嗪或皮下注射肾上腺素，氢化可的松静脉滴注。故答案应选D。
Anderson was born in the slums(贫民区) of Odense, Denmark, on April 2,1805. His early life was not easy. His father was a shoemaker and his mother worked as a washerwoman. He received little early education. As a child he was very emotional and was laughed at for being feminine(女性化)and tall. In l8l6 his father died and Andersen was forced to go out to work. first in a tailor’s shop and then at a tobacco factory. At the age of l4 Anderson moved to Copenhagen to start a career as a singer and actor. He struggled for three years until he had to leave the theatre when his voice broke in l822. Anderson went to a grammar school after he left the theatre. Having done well he was admitted to Copenhagen University in 1828. He began to publish his fairy tales in 1835. They came out in small volumes(量) until his death. Nowadays, children all around the world are familiar with his fairy tales such as “The Little Mermaid ”(《美人鱼》)，“The Princess and the Pea” and “The Emperor’s New Clothes”. The colourful characters from the stories made us laugh and cry throughout our childhood. Although Anderson lived a hard life, he tried to make people laugh in all his stories. He wrote because he didn’t want children to have a sad childhood as he did. “Being born in a duck yard does not matter, if only you are hatched(孵化) from a swan’s egg,” he once said． The work brought Anderson world fame, but he remained a lonely man. He loved three women in his life but none of them loved him back and he never married. His friends were the people that paid for his work and not people he was particularly close to. “Just living is not enough…One must have sunshine, freedom, and a little flower,’’ he said. Anderson died on August 4, l 875. Anderson
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求出任何情况下穿过线圈的磁通量