空气中能支持燃烧和供给呼吸的气体是( ) A.氮气 B.氧气 C.稀有气体 D.

题型:选择题

问题:

空气中能支持燃烧和供给呼吸的气体是(  )

A.氮气

B.氧气

C.稀有气体

D.二氧化碳

考点:氧气的用途
题型:选择题

就给定资料所反映的主要问题,用1200字左右的篇幅,自拟标题进行论述。要求中心明确,内容充实,论述深刻,有说服力。

题型:选择题

“禁夜”是古代的一种政策。《太平广记》载,晚唐诗人温庭筠就曾因“醉而犯夜,为虞侯所系,败面折齿”。宋代解除这一禁令的举措

A.促进了商品经济的发展

B.有利于农业经济的增长

C.保证了政府的基本财政收入

D.引发了我国经济重心的南移

题型:选择题
Before discussing different kinds of emotions, let us briefly talk about how researchers   1 bodily processes, actions and behavior, and how this relates to what we do in our daily lives when we observe emotions in  2  .
Bodily processes can be directly measured by   3  of a polygraph. (测谎器)When a polygraph is skillfully used to   4  how we react bodily with what we are   5 , it is called a "lie detector". Bodily processes can also be measured  6 . This is what we do when we observe someone blushing (脸红). However, we are not always  7  of what bodily processes respond to.
Measuring action   8  behavior is the other way researchers assess the emotions.    9 , one measure of fear of snakes is how  10 a person will go to the snake. Another procedure is to have a person  11  how afraid he is, or how he feels, in this way, researchers have 12  the so-called "fear thermometer" to assess a person’s fear.  13  our everyday living, we do very much the same thing. Only not too   14 . We react to what a person does, what he says, 15  he says it, and how he looks. Is he smiling? Is his voice trembling? We put all this  16  together to infer what a person is feeling.
  17 , we do not always act as we feel. Sometimes we do things that we don’t feel like doing.  18  we say we feel one way and then we act another. Actors, for example, successfully learn to "make believe" emotions, or learn to   19  them. Thus we   20  always tell what a person is feeling by what he says or by what he does.
小题1:
A.measureB.describeC.makeD.use
小题2:
A.otherB.othersC.anotherD.the others
小题3:
A.waysB.methodsC.meansD.tools
小题4:
A.combineB.treatC.examineD.compare
小题5:
A.doingB.sayingC.observingD.carrying
小题6:
A.directlyB.indirectlyC.easilyD.difficultly
小题7:
A.afraidB.fondC.awareD.accused
小题8:
A.butB.soC.andD.or
小题9:
A.For exampleB.On one handC.As well asD.At times
小题10:
A.slowB.fastC.farD.close
小题11:
A.tellB.sayC.talkD.speak
小题12:
A.approvedB.discoveredC.developedD.informed
小题13:
A.DuringB.WithC.OnD.In
小题14:
A.skillfullyB.systematicallyC.naturallyD.eventually
小题15:
A.whyB.whereC.howD.whether
小题16:
A.imaginationsB.observationsC.impressionsD.awareness
小题17:
A.ThereforeB.OtherwiseC.HoweverD.Anyway
小题18:
A.SometimeB.SomewayC.SometimesD.Anytime
小题19:
A.expressB.hideC.actD.say
小题20:
A.needn’t B.shan’tC.won’t D.Can’t
题型:选择题

下列不属于外汇效果评价指标的是()

A.经济外汇净现值

B.经济换汇成本

C.经济节汇成本

D.经济外汇成本

题型:选择题

关于全身治疗入射剂量的叙述,不正确的是()

A.距离延长后,X射线在射野内的散射线成分增加

B.患者在接受治疗时由于需用毯子盖在身上,因而增加了入射剂量

C.患者在接受治疗时盖在身上的毯子,其等效水厚度约为1.5mm

D.需用散射及能量衰减屏,以减小剂量在体内的建成

E.由于要用毯子盖在患者身上,因而可不必使用散射及能量衰减屏

更多题库