某地区有10万人口,1960年总死亡人数为1000名,已发现的结核病患者有300名,

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问题:

某地区有10万人口,1960年总死亡人数为1000名,已发现的结核病患者有300名,其中男性200名,女性100名。1960年死于结核病者60名,其中男性50名。

该地区男性结核病的死亡率为()。

A.20%

B.25%

C.30%

D.50%

E.所给资料不能计算

考点:疾病控制(医学高级)传染性疾病控制传染性疾病控制题库
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Passage Three

In addition to urge to conform which we generate ourselves, there is the external pressure of the various formal and informal groups we belong to, the pressure to back their ideas and attitudes and to imitate their actions. Thus our urge to conform receives continuing, even daily reinforcement. To be sure, the intensity of the reinforcement, like the strength of the urge and the ability and inclination to withstand it, differs widely among individuals. Yet some pressure is present for everyone. And in one way or another, to some extent, everyone yields to it.

It is possible that a new member of a temperance group might object the group’s rigid insistence that all drinking of alcoholic beverages is wrong. He might even speak out, reminding them that occasional, moderate drinking is not harmful, that even the Bible speaks approvingly of it. But the group may quickly let him know that such ideas are unwelcome in their presence. Every time he forgets this, he will be made to feel uncomfortable. In time, if he values their companionship he will avoid expressing that point of view. He may even keep himself from thinking.

This kind of pressure, whether spoken or unspoken, can be generated by any group, regardless of how liberal or conservative, formal or casual it may be. Friday night poker clubs, churches, political parties, committees, fraternities, unions. The teenage gang that steals automobile accessories may seem to have no taboos. But let one uneasy member remark that he is beginning to feel guilty about his crimes and their wrath will descend on him.

Similarly, in high school and college, the crowd a student travels with has certain (usually unstate D) expectations for its members. If they drink or smoke, they will often make the member who does not do so feel that he doesn’t fully belong. If a member does not share their views on sex, drugs, studying, cheating, or any other subject of importance to them, they will communicate their displeasure. The way they communicate, of course, may be more or less direct. They may tell him he’d better conform "or else". They may launch a teasing campaign against him. Or they may be even less obvious and leave him out of their activities for a few days until he asks what is wrong or decides for himself and resolves to behave more like them.

The urge to conform on occasion conflicts with the tendency to resist change. If the group we are in advocates an idea or action that is new and strange to us, we can be torn between seeking their acceptance and maintaining the security of familiar ideas and behavior. In such cases, the way we tuna will depend on which tendency is per in us or which value we are more committed to. More often, —however, the two tendencies do not conflict but reinforce each other. For we tend to associate with those whose attitudes and actions are similar to our own.

The main topic of this text is ().

A.the external pressure which urges us to conform with others

B.both the internal and external urge we have to conform with others

C.the urge and the tendency for us to conform with others

D.the generation of the external urge for us to conform with others

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一男性老年病人,临床出现骨痛,头晕、血沉111mm/小时,Hb90g/L,骨髓中异常浆细胞30%,疑诊为多发性骨髓瘤。

如果该患者的免疫球蛋白不增高,骨骼明显溶骨性病变,说法不正确的是 ()

A.可考虑多发性骨髓瘤(不分泌型)

B.可完全排除多发性骨髓瘤

C.可考虑多发性骨髓瘤(IgA.

D.可考虑多发性骨髓瘤(IgG)

E.可考虑多发性骨髓瘤(IgD.

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受精卵着床必须具备的条件是

A.透明带必须消失

B.囊胚细胞滋养细胞必须分化出合体滋养细胞

C.囊胚和子宫内膜必须同步发育并相互配合

D.孕妇体内必须有足够数量的孕酮,子宫有一个极短的敏感期允许受精卵着床

E.以上均是

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异步电动机有哪几种启动方式?

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相对于企业其他各项支出,纳税成本具有的显著特征是()。

A.风险性

B.完全的现金性

C.广泛性

D.可预测性

E.与收益变现程度的非对称性

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