患者男性，52岁，因煤气火焰致全身多处烧伤，面积达80%，合并重度吸入性损伤，伤后立即送至当地医院抗休克治疗，已行气管切开术。患者既往糖尿病病史10余年，长期吸烟史，不定时监测血压。现伤后2天，患者出现高热，呼吸急促，吸痰可见黄色脓痰，胸部X线片：双下肺斑片状阴影。
引起肺部感染的临床常见因素不包括（）
A.行气管切开术
B.超声雾化器污染
C.输氧装置中的湿化瓶污染
D.长期平卧
E.营养不良
参考答案：E
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| Mother's Day was coming,but John had been visiting customers.He was now in a small town just outside a flower shop and he knew what to do. He went into the shop and saw a young man__1__the clerk to sell him some roses for six dollars, but the clerk just explained that roses were__2__. The clerk looked up at John,__3__her head.Something inside of John was__4__by the boy's voice. John had been__5__in his business,and he looked at the clerk and__6__mouthed that he would pay for the roses. The clerk looked at the young man and told him to get the roses for six dollars.The young man almost jumped into the__7__and ran from the store with the__8__.It was worth the extra dollars just to see that kind of__  9__.John ordered his own flowers and made sure that the__10__would include a note telling his mother how much he loved her.He drove away fro  m the shop,feeling very__11__.He caught a light about two blocks away.As he__12__at the light,he saw the young boy walking down the sidewalk.He watched him cross the street and enter a park throug  h two huge gates.Suddenly,he__13__that it wasn't a park but a cemetery (公墓). The light__14__,and John slowly crossed the intersection.He__15__and on an impulse (冲动) got out and began to follow the boy.The young man stopped by a small monument and went to his__16__. He began to cry after he carefully__17__the roses on the grave.He stared at the little boy's heaving (起 伏的) body and listened to his crying. John turned with__18__,and walked back to his car.He drove__19__to the shop and told the clerk he would__20__the flowers personally.He wanted to tell his mother one more time just how much he loved her. | ||||
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