* * 分泌物中线索细胞检查对非特异性 * * 炎有何诊断意义？

搜题请搜索小程序“爱下问搜题”

问题问答题简答题

答案

参考答案：在显微镜高倍镜下观察分泌物，非特异性 * * 炎（BV）患者可见大量 * * 上皮细胞，少量脓细胞及无数成簇的小杆菌群或吸附于上皮细胞表面，致使细胞边缘晦暗，呈锯齿形，即为线索细胞。若在革兰染色镜检标本时，未找到线索细胞，则排除BV，阴性预测值可达97.4%。

单项选择题

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 (1) the Depression of the 1930’s, the United States experienced a (2) birth rate. Then with the prosperity (3) on by the Second World War and the economic boom that followed it, young people married and (4) households earlier and began to (5) larger families than had their (6) during the Depression. Birth rates rose to 102 per thousand in 1946, 106.2 in 1950, and 118 in 1955. (7) economics was probably the most important (8) , it is not the only explanation for the baby boom. The increased value placed (9) the idea of the family also helps to (10) this rise in birth rates. The baby boomers began streaming (11) the first grade by the mid-1940’s and became a (12) by 1950. The public school system suddenly found itself (13) The wartime economy meant that few new schools were buih between 1940 and 1945. (14) , large numbers of teachers left their profession during that period for better-paying jobs elsewhere.

(15) , in the 1950’s, the baby boom hit an antiquated and inadequate school system. Consequently, the custodial rhetoric of the 1930’s no longer made (16) ; keeping youths ages sixteen and older out of the labor market by keeping them in school could no longer be a high (17) for an institution unable to find space and staff to teach younger children. With the baby boom, the focus of educators (18) turned toward the lower grades and back to basic academic skills and (19) . The system no longer had much (20) in offering nontraditional, new, and extra services to older youths.

9().

A. at

B. on

C. for

D. with

查看答案

单项选择题

公共管理的根本特点是【】

A．与时俱进，为公民提供充足优质的公共服务与公 * * 品

B．多中心的新型治理模式

C．公共管理的主体多元化

D．公共事务的复杂性与广泛性

查看答案