百白破混合疫苗初次免疫的年龄是() A.出生后2~3天 B.2个月以上 C.6个月以

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问题:

百白破混合疫苗初次免疫的年龄是()

A.出生后2~3天

B.2个月以上

C.6个月以上

D.8个月以上

E.3个月以上

考点:儿童保健(医学高级)儿童保健学儿童保健学题库
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以地表水作为水源的给水处理厂常规处理的工艺流程包括()。

A.初沉

B.混凝

C.过滤

D.沉淀

E.消毒

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属于碱性物质的是

A.血红蛋白
B.细胞核蛋白
C.嗜碱性颗粒
D.淋巴细胞胞浆
E.中性颗粒

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(5分)在探究杠杆的平衡条件的实验中:

(1)将杠杆装在支架上,发现杠杆右端下沉,可将杠杆右

侧的平衡螺母向        调;若当右侧平衡螺母调到

头了,杠杆右端仍下沉,此时应将杠杆左侧的平衡螺

母向_________调,直到杠杆在水平位置平衡为止。

(2)使杠杆在倾斜一定角度的位置做实验,也能得出杠杆平衡条件。这种实验方案与杠杆在水

平位置做实验的方案相比较,你认为            (选填“倾斜”或“水平位置”)实验

方案好。理由:                                        

(3)如图10所示,杠杆在水平位置平衡。如果在两侧钩码下再各挂一个相同的钩码,则杠杆_________端将下沉。

题型:单项选择题

简述宋元考古方向。

题型:单项选择题

Many researchers have found greater dependence and obedience in very young girls, greater autonomy and activity in boys. When a barrier is set up to separate children from their mothers, boys try to knock it down; girls cry helplessly. There is little doubt that mother’s encouragement or discouragement—of such behavior plays a major role in determining adult personality. For example, a mother often stimulates male autonomy by throwing a toy far away from her young son, thus silently suggesting to him that he leaves her to get it.
Animal studies suggest that there may be a biological factor in material behavior; mothers of some monkeys punish their male babies earlier and more often than their female offspring; they also touch their female babies more often and act more protectively toward them.
As for the controversial question of female "passivity", psychologist Helen Deutsh believes that the concept has been misunderstood. "There is no contradiction between being feminine and working. The self can be active in both men and women," she says. It is only in love and sex that passivity is particularly appropriate for women. As she sees it, passivity is no more than a king of openness and warmth; it does not mean "inactivity of emptiness".
Another controversy ranges over the effect of hormones. Aggressive women; who discount hormonal influence, disagree violently with scientific researchers, who almost unanimously agree that hormones help determine how people feel and act. So far, there have been few studies of male hormones, but scientists think they may eventually discover hormonal cycles in men that produce cyclic changes in mood and behavior. As for females, studies have indicated that 49 percent of female medical and surgical admissions, most psychiatric hospital admission and 62 percent of violent crimes among women prisoners are related with hormonal cycles in women.

Animal studies show that ______ .

A.monkey mothers know some knowledge on biology

B.mothers tend to show real love to their female babies

C.the offspring does not need so much caring from mother

D.monkey mothers give more care to their female kids by instinct

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