下列实验不能达到预期目的的是 [ ] A.用肥皂水区别硬水和软水 B.用碘水区别

题型:选择题

问题:

下列实验不能达到预期目的的是 [ ]

A.用肥皂水区别硬水和软水

B.用碘水区别淀粉和蔗糖

C.用酚酞试液区别盐酸和食盐水

D.用点燃法区别聚乙烯和聚氯乙烯

考点:物质的鉴别
题型:选择题

患者,男,70岁。左侧下颌部阵发性抽搐剧痛 3天,不能吃饭,查体:双额纹对称,闭目有力,面部感觉对称存在。诊断

A.右面神经麻痹
B.偏头痛
C.左三叉神经痛
D.右三叉神经痛
E.左面神经麻痹

题型:选择题

压缩机的生产能力(排气量)

题型:选择题

某男,50岁,.缺失,5年前曾在诊所行单端固定桥修复,现诉:松动疼痛检查,锤造开面冠,作为单端固定桥的固位体。开面冠边缘与颈缘有间隙。牙龈区红肿,探诊易出血。Ⅰ~Ⅱ度松动,叩(+)。

对该患者的正确处理是()

A.局部上药后,观察

B.全身用药后,观察

C.拆除固定桥,对进行治疗

D.面开髓,对其进行治疗

E.以上均可

题型:选择题

Every summer, Jean Piaget retreats to his cabin in the Alps, where he spends most of his days analyzing the mass of research data generated over the past year at his Center for Genetic Epistemology. During long walks along the mountain trails, he mulls over the latest experimental results, and in the cool mountain evenings, he formulates his conclusions. With the approach of fall, he will descend from the mountain, manuscript for a book and several journal articles in hand. This time-honored procedure of careful observation followed by seclusion for thought and synthesis, has enabled him to become the most prolific, if not the most famous psychologist of the century.
Piaget has only been widely known in this country since the 1960s, when his works were translated from their original French. But he has been recognized as an expert in the field of cognitive development in Europe since the 1930s. In fact, Piaget’s publishing career can be traced to the year 1906, when as a child of ten, he published his careful notes on the habits of an albino sparrow he observed near his home in Switzerland. After his precocious debut as an ornithologist, he took an after school job at the local natural history museum, soon becoming an expert on mollusks. At the age of sixteen he was recommended for a curator’s position at the natural history museum in Geneva, but declined in favor of continuing his education.
He studied natural science at the University of Neuchatel, obtaining his doctorate at the age of twenty-one. His readings in philosophy stimulated an intense interest in epistemology-the study of humans acquire knowledge. Convinced that cognitive development had a genetic basis. Piaget decided that the best way to approach epistemology would be through its behavioral and biological components. Psychology appeared to be the discipline that best incorporated this approach.

Piaget’s main academic interest was in

A.how human beings learn through observations.

B.the genetic and cognitive basis for humans’ cognitive development.

C.analyzing research data through scientific method.

D.behaviorists’ views on acquiring knowledge.

题型:选择题

据报载,山西洪洞县黑砖窑出现未成年“包身工”,他们被迫做苦力,砖车拉不动时,监工就在后面用鞭子抽打。虐待未成年人,使用童工是我国法律明令禁止的行为。法院经审理,29名“黑砖窑”犯罪嫌疑人分别受到应有的法律制裁。

下列哪些属于保护你这一权利的法律?()

A.未成年人保护法

B.宪法

C.刑法

D.中华人民共和国民法通则

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