扇形OAB的面积是1cm2,半径是1cm,则它的中心角的弧度数为.

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问题:

扇形OAB的面积是1cm2,半径是1cm,则它的中心角的弧度数为 

考点:弧度制、弧度与角度的互化任意角的三角函数
题型:填空题
We all know that language can sometimes get lost in translation. But do you know that some facial小题1:may also be小题2:in cross-cultural situations?
According to a study by Glasgow University, Europeans look小题3: a person's whole face 小题4:people from East Asia focus 小题5:on the eyes. Researchers recorded the eye movements of 13 Westerners and 13 Easterners as they observed pictures of expressive faces. They were asked to小题6:the pictures into the following categories: happy, sad, surprised, fearful, disgusted, angry, or neutral.
The team found East Asians focus much more attention on the eyes and also make a  小题7:number of mistakes. Different from Europeans, they小题8: to have a more difficult time  小题9: the difference between a face that looks fearful as opposed to surprised, and disgusted as opposed to angry.
"Westerners look at the eyes and the mouth小题10:, whereas Easterners小题11:the eyes and neglect the mouth," said researcher Rachael Jack. "This means that Easterners have小题12: in telling apart facial expressions that look similar around the eye region."
Jack said that the differences in eye movement reflected a cultural小题13:in the way people use their faces to express themselves. Easterners use the eyes more and the mouth 小题14: .
The difference in the use of text message "emoticons" (表情符号)小题15: the idea. Easterners use the eyes to小题16: emotion, for example "^-^" for happy and "┬_┬" for sad. Westerners,小题17:, use the mouth, for example ":-)" for happy and ":-(" for sad.
The researchers said their results showed communication between people is much more小题18: than previously thought. When it 小题19: communicating emotions across cultures, Easterners and Westerners can find themselves小题20: in translation.
小题21:  
A.expressions B.appearances C.featuresD.differences
小题22:
A.interesting B.confusing C.outstanding D.surprising
小题23:
A.across B.forC.on D.into
小题24:
A.when B.as C.while D.if
小题25:
A.reallyB.mainly C.slightly D.nearly
小题26: 
A.make B.turn C.get D.put
小题27:
A.small B.big C.fewer D.larger
小题28:
A.need B.attempt C.tend D.intend
小题29: 
A.saying B.telling C.knowingD.judging
小题30:
A.in a different way B.in equal measure C.in turns D.alternatively
小题31:
A.favor B.approve C.findD.focus
小题32:
A.difficultyB.abilityC.possibilityD.certainty
小题33:
A.interestB.gap C.similarity D.concern
小题34:
A.little B.least C.less D.more
小题35:
A.supports B.opposes C.rejects D.counts
小题36: 
A.make B.create C.convey D.prove
小题37: 
A.therefore B.however C.althoughD.moreover
小题38:
A.separated B.related C.expected D.complicated
小题39: 
A.comes to B.talks about C.turns to D.gets to
小题40:
A.puzzling B.lost C.excitingD.upset
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某同学经常牙龈出血,他应该多吃的食物是

A.鸡蛋和牛奶

B.海鲜和肉类

C.水果和蔬菜

D.肝和豆类

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简述ZP•WD型18信息移频自动闭塞电源盒的测试方法。

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调式的稳定音级是()()(),正音级是()()()可分别用英文字母()()()表示。在西洋调式中,大小调式分别可分为()()()。决定大小调式的音级是第()级。

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活塞杆不得弯曲及严重擦伤,磨损不得大于()

A.0.1-0.3

B.0.3-0.5

C.0.5-0.7

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