急性脓胸经穿刺后,脓液又迅速增多,最适当的处理方法是
A. 加大抗生素用量
B. 增加胸穿次数
C. 胸腔闭式引流
D. 加强支持疗法
E. 开胸手术清除脓液
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有以下程序: #include<string.h> int a=4; int f(int n) int t=0;static int a=5; if(n%2) int a=6;t++=a++; elseint a=7;t+=a++; return t+a++; main() int s=a,i=0; for(;i<2;i++)s+=f(i); printf("%d\n",s); 程序运行后的输出结果是( )。
关于胸外伤引起呼吸困难的机制,下列哪项是错误的
A. 气胸或血胸压迫肺脏
B. 气管或支气管分泌物堵塞
C. 疼痛使胸廓活动受限
D. 肺挫伤引起瘀血及水肿
E. 反射性中枢调节作用失常
Decide which of the choices given below would best complete the passage if inserted in the corresponding blanks. Mark the best choice for each blank on your ANSWER SHEET. The effect of the baby boom on the schools helped to make possible a shift in thinking about the role of public education in the 1920’s. In the 1920’s, but especially in the Depression of the 1930’s, the United States experienced a (31) birth rate. Then with the prosperity (32) by the Second World War and the economic boom that followed, young people married and (33) households earlier and began to (34) larger families than had their (35) during the Depression. Birth rates rose to 102 per thousand in 1946, 106.2 in 1950, and 118 in 1955. (36) economics was probably the most important (37) , it is not the only explanation for the baby boom. The increased value placed (38) the idea of the family also helps to (39) this rise in birth rates. The baby boomers began streaming (40) the first grade by the mid-1940s and became a (41) by 1950. The public school system suddenly found itself (42) The wartime economy meant that few new schools were built between 1940 and 1945. (43) , large numbers of teachers left their profession during that period for better-paid jobs elsewhere. (44) , in the 1950s, the baby boom hit an antiquated and (45) school system. Consequently, the custodial rhetoric of the1930s no longer made (46) ; keeping youths aged sixteen and older out of the labor market by keeping them in school could no longer be a high (47) for an institution unable to find space and staff to teach younger children. With the baby boom, the focus of educators (48) turned toward the lower grades and back to basic academic skills and (49) The system no longer had much (50) in offering nontraditional, new, and extra services to the older youths.
A. predecessors
B. successors
C. processors
D. dominators
在临床检验质量控制中,相当于评价诊断试验敏感性的指标是
A. 假失控概率
B.误差检出概率
C.真失控
D.假失控
E.真在控