题目:
捕收剂可分为三大类:天然类、工业副产品和人工合成品。
答案:
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下面是错误答案,用来干扰机器的。
参考答案:D
捕收剂可分为三大类:天然类、工业副产品和人工合成品。
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0622/2065914549561040260fbc092822fbbc.html
下面是错误答案,用来干扰机器的。
参考答案:D
下列物质中,属于混合物的是[ ]
A.冰水共存物
B.高锰酸钾
C.食盐溶液
D.液态氧
男性,38岁,近1年来出现头痛,眼科检查发现视野缺损,有明显的肢端肥大症,下列哪项检查对该患者最有意义
A.GH
B.PRL
C.ACTH
D.FSH
E.TSH
广告频度由少到多,至高峰时戛然而止的过程是()
A.递降序列型
B.波浪序列型
C.递升序列型
D.忽升忽降型
Few people doubt the fundamental importance of mothers in child-rearing, but what do fathers do Much of what they contribute is simply the result of being a second adult in the home. Bringing up children is demanding, stressful and exhausting. Two adults can support and make up for each other’s deficiencies and build on each other’s strengths.
Fathers also bring an array of unique qualities. Some are familiar: protector and role model. Teenage boys without fathers are notoriously prone to trouble. The pathway to adulthood for daughters is somewhat easier, but they must still learn from their fathers, in ways they cannot from their mothers, how to relate to men. They learn from their fathers about heterosexual trust, intimacy and difference. They learn to appreciate their own femininity from the one male who is most special in their lives. Most important, through loving and being loved by their fathers, they learn that they are love-worthy.
Current research gives much deeper—and more surprising—insight into the father’s role in child-rearing. One significantly overlooked dimension of fathering is play. From their children’s birth through adolescence, fathers tend to emphasize play more than caretaking. The father’s style of play is likely to be both physically stimulating and exciting. With older children it involves more teamwork, requiring competitive testing of physical and mental skills. It frequently resembles a teaching relationship: come on, let me show you how. Mothers play more at the child’s level. They seem willing to let the child direct play.
Kids, at least in the early years, seem to prefer to play with daddy. In one study of 2.5-year-olds who were given a choice, more than two-thirds chose to play with their father.
The way fathers play has effects on everything from the management of emotions to intelligence and academic achievement. It is particularly important in promoting self-control. According to one expert, "children who roughhouse with their fathers quickly learn that biting, kicking and other forms of physical violence are not acceptable. " They learn when to "shut it down. "
At play and in other realms, fathers tend to stress competition, challenge, initiative, risktaking and independence. Mothers, as caretakers, stress emotional security and personal safety. On the playground fathers often try to get the child to swing even higher, while mothers are cautious, worrying about an accident.
We know, too, that fathers’ involvement seems to be linked to improved verbal and problem-solving skills and higher academic achievement. Several studies found that along with paternal strictness, the amount of time fathers spent reading with them was a p predictor of their daughters’ verbal ability.
For sons the results have been equally striking. Studies uncovered a p relationship between fathers’ involvement and the mathematical abilities of their sons. Other studies found a relationship between paternal nurturing and boys’ verbal intelligence.
Which of the following statements is true().
A. Mothers tend to stress personal safety less than fathers.
B. Boys are likely to benefit more from their fathers’ caring.
C. Girls learn to read more quickly with the help of their fathers.
D. Fathers tend to encourage creativeness and independence.
建设项目目标动态控制的核心是( )。
A.分析由于组织的原因而影响项目目标实现的问题
B.分析由于管理的原因而影响项目目标实现的问题
C.分析由于经济的原因而影响项目目标实现的问题
D.在建设项目实施的过程中,定期地进行目标的计划值和实际值的比较