义齿初戴时出现疼痛的原因不包括A.组织面有塑料小瘤 B.垂直距离过低 C.骨突处缓冲

题型:单项选择题

问题:

义齿初戴时出现疼痛的原因不包括

A.组织面有塑料小瘤

B.垂直距离过低

C.骨突处缓冲不够

D.基托边缘过长

E.咬合不平衡

考点:口腔执业医师口腔执业医师50
题型:单项选择题

数据库系统可能出现下列故障: Ⅰ.事务执行过程中发生运算溢出 Ⅱ.某并发事务因发生死锁而被撤销 Ⅲ.磁盘物理损坏 Ⅳ.系统突然发生停电事务 Ⅴ.操作系统因被病毒攻击而突然重启 以上故障属于系统故障(软故障)的是______。

A.Ⅰ、Ⅱ、Ⅳ和Ⅴ

B.Ⅳ和Ⅴ

C.Ⅰ、Ⅲ、Ⅳ和Ⅴ

D.Ⅲ和Ⅳ

题型:单项选择题

Every day on the road, accidents are caused. They do not only happen. The reason may be easy to see: an overloaded tray, a shelf out of reach, a patch of ice on the road. But more often than not there is a chain of events leading up to the misfortune-frustration, tiredness or just bad temper-that show what the accident really is, a sort of attack on oneself.

Road accidents, for example, happen frequently after a family quarrel, and we all know people who are accident-prone, so often at odds with themselves and the world that they seem to cause accidents for themselves and others.

By definition, an accident is something you cannot predict or avoid, and the idea which used to be current, that the majority of road accidents are caused by a minority of criminally careless drivers, is not supported by insurance statistics. These show that most accidents involve ordinary motorists in a moment of carelessness or thoughtlessness.

It is not always clear, either, what sort of conditions make people more likely to have an accident. For instance, the law requires all factories to take safety actions and most companies have safety committees to make sure the regulations are observed, but still, every day in Britain, some fifty thousand men and women are absent from work due to an accident. These accidents are largely the result of human error or misjudgment-noise and fatigue, boredom or worry are possible factors which contribute to this. Doctors who work in factories have found that those who drink too much, usually people who have a high anxiety level, run three times the normal risk of accidents at work.

小题1:This passage might be written to         .

A.college students

B.drivers

C.ordinary citizens

D.businessmen小题2:“Accident-prone” in Paragraph 2 means          .

A.likely to have accidents

B.injured in accidents

C.likely to die in accidents

D.responsible for road accidents小题3:The passage suggests that           .

A.accidents mostly result from slippery roads

B.accidents are usually caused by psychological factors

C.doctors run three times the normal risk of accidents in factories

D.about 50,000 people lost their lives at work in Britain every day小题4:Which of the following is NOT discussed as a factor of accidents in this passage?

A.Mood

B.Carelessness

C.Tiredness

D.Weather小题5:What do you think would be the best title for the passage?

A.Accidents and Human

B.Why accidents happen

C.Human Factors in Accidents

D.How to Prevent Accidents

题型:单项选择题

A、B两种固体物质(均不含结晶水)溶解度如图所示.

①t1℃时,A和B的溶解度大小关系是A        B(填“>”、“=”或“<”).

②t1℃时,将4.2g  A物质溶于20g水中,刚好形成饱和溶液,t1℃时,A物质的溶解度为        g/100g水,A的饱和溶液转化处不饱和溶液的方法是                  .(写一条)

③t2℃时,B物质的溶解度为25g/100g水,在t2℃时,向50g水中加入15g的B物质,充分溶解所得溶液的溶质质量分数为                  

④如A和B中有一种物质是氯化钠,你认为是A还是B        (填A或B),一般通过海水晒盐的方法从海水中获得氯化钠晶体,原因是                             

题型:单项选择题

下列哪项不是登革热的实验室检查特点()

A.白细胞总数升高

B.血小板减少

C.转氨酶轻度升高

D.部分可检出特异性抗体

E.尿中可有少量红细胞、白细胞、管型

题型:单项选择题

方法库系统的三个层次及它们分别对应什么语言?

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