哪种叙述不能有效增强桩冠的固位() A.增加冠桩与根管壁的密合度 B.增加粘固剂厚度

题型:单项选择题

问题:

哪种叙述不能有效增强桩冠的固位()

A.增加冠桩与根管壁的密合度

B.增加粘固剂厚度

C.减小根管壁锥度

D.延长冠桩长度

E.以上都可以增强桩冠固位

考点:广西口腔住院医师规范化培训口腔修复学口腔修复学题库
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新生儿病理性黄疸最不常见的原因是()

A.胆红素排泄差

B.母婴血型不合

C.肝酶发育不完善

D.红细胞不成熟,易被破坏

E.肝细胞内Y、Z蛋白含量不足

题型:单项选择题

创立世界上最早的无线广播台的国家是()

A.美国

B.法国

C.英国

D.德国

题型:单项选择题

下列经济指标中,能导出其他经济指标,因此是构成财务现金流量的基本要素的有 ( )。

A.投资

B.经营成本

C.销售收入

D.税金

E.利润

题型:单项选择题

The "standard of living" of any country means the average person’s share of the goods and services which the country produces. A country’s standard of living, (1) , depends first and (2) on its capacity to produce wealth." Wealth" in this sense is not money, for we do not live on money (3) on things that money can buy. "Goods" such as food and clothing, and "services" such as transport and " (4) ". A country’s capacity to produce wealth depends upon many factors, most of (5) have an effect on one another. Wealth depends (6) a great extent upon a country’s natural resources. Some regions of the world are well supplied with coal and minerals, and have a fertile soil and a (7) climate; other regions possess none of them.

Next to natural resources (8) the ability to turn them to use. China is perhaps as well (9) as the USA in natural resources, but suffered for many years from civil and (10) wars, and (11) this and other reasons was (12) to develop her resources. (13) and stable political conditions, and (14) from foreign invasion, enable a country to develop its natural resources peacefully and steadily, and to produce more wealth than another country equally well (15) by nature but less well ordered.

A country’s standard of living does not only depend upon the wealth that is produced and consumed (16) its own borders, but also upon what is indirectly produced through international trade. (17) , Britain’s wealth in foodstuffs and other agricultural products would be much less if she had to depend only on (18) grown at home. Trade makes it possible for her surplus manufactured goods to be traded abroad for the agricultural products that would (19) be lacking. A country’s wealth is, therefore, much influenced by its manufacturing capacity, (20) that other countries can be found ready to accept its manufactures.

3()

A.or

B.nor

C.but

D.except

题型:单项选择题

直埋敷设于非冻土地区时,电缆埋置深度应符合( )规定。

A.电缆外皮至地下构筑物基础,不得小于0.5m
B.电缆外皮至地下构筑物基础,不得小于0.3m
C.电缆外皮至地面深度,不得小于0.7m
D.当位于车行道或耕地下时,应适当加深,且不宜小于1m

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