预防HIV感染的主要措施应当为() A.加强爱国卫生宣传,养成良好的卫生习惯,防止病

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问题:

预防HIV感染的主要措施应当为()

A.加强爱国卫生宣传,养成良好的卫生习惯,防止病从口入

B.加强爱国卫生宣传,消灭四害,搞好环境卫生

C.加强爱国卫生宣传,搞好计划免疫,增强体质

D.加强宣传教育,严禁毒品注射,禁止性乱交,严格检查血液制品

E.加强爱国卫生宣传,搞好环境卫生,保持室内能通风

考点:江苏住院医师感染科获得性免疫缺陷综合征(AIDS)获得性免疫缺陷综合征(AIDS)题库
题型:单项选择题

Many theories concerning the causes of juvenile delinquency (crimes committed by young people) focus either on the individual or on society as the major contributing influence. Theories (51) on the individual suggest that children engage in criminal behavior (52) they were not sufficiently penalized for previous misdeeds or that they have learned criminal behavior through (53) with others. Theories focusing on the role of society suggest that children commit crimes in response to their failure to rise above their socioeconomic status, (54) as a rejection of middle-class values. Most theories of juvenile delinquency have focused on children from disadvantaged families, ignoring the fact that children from wealthy homes also commit crimes. The latter may commit crimes (55) lack of adequate parental control. All theories, however, are tentative and are (56) to criticism. Changes in the social structure may indirectly (57) juvenile crime rates. For example, changes in the economy that lead to fewer job opportunities for youth and rising unemployment (58) make gainful employment increasingly difficult to obtain. The resulting discontent may in turn lead more youths into criminal behavior. Families have also (59) changes these years. More families consist of one-parent households or two working parents; consequently, children are likely to have less supervision at home (60) was common in the traditional family structure. This lack of parental supervision is thought to be an influence on juvenile crime rates.

56().

A.immune 

B.resistant 

C.sensitive 

D.subject

题型:单项选择题

与图所示汽油机的工作过程中能量转化情况一致的是实验________(填“甲”或“乙”)。

题型:单项选择题

环路锁定时,瞬时频差()固有频差()控制频差,相差为()控制电压为()

A、很小的量、等于、0、常数

B、0、大于、很小的量、变量

C、0、小于、很小的量、变量

D、0、等于、很小的量、常数

题型:单项选择题

若x和y都是double型变量,且x的初值为3.0,y的初值为2.0,则表达式pow(y,fabs(x))的值为 【7】

题型:单项选择题

DVD视盘机最高数据传输率比VCD高()倍。

A.2

B.7

C.5

D.15

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