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1第二步工作叫掐丝,就是拿扁铜丝(横断面是长方形的)粘在铜胎表面上。这是一种非常精细的工作。掐丝工人心里有谱,不用在铜胎上打稿,就能自由自在地粘成图画。譬如粘一棵,干和枝的每条线条该多长,该怎么弯曲,他们能把铜丝恰如其分地剪好,然后用钳子夹着,在极稠的白芨浆里蘸一下,粘到铜胎上去。柳树的每个枝子上长着好些叶子,每片叶子两笔,像一个左括号和一个右括号,细小了,可是他们也要细磨细琢地粘上去。他们简直是在刺绣,不过是绣在铜胎上而不是绣在缎子上,用的是铜丝而不是丝线、绒线。 2他们能自由地在铜胎上粘成山水、花鸟、人物种种图画,当然也能按照美术家的设计图样工作。反正他们对于铜丝好像画家对于笔下的线条,可以随意驱遣,到处合适。美术家和掐丝工人的合作,使景泰蓝器物推陈出新,博得多方面人士的爱好。 3粘在铜胎上的图画线条画,而且一般是繁笔,没有疏疏朗朗只用少数几笔的。这里头有道理可说。景泰蓝要色料,铜丝粘在上面,就有了界限。譬如柳条上的每片两条铜丝构成,绿色料就可以填在两条铜丝中间,不至于溢出来。其次,景泰蓝内里是铜胎,表面是的色料,铜胎和色料,膨胀率不相同。要是色料的面积,烧过以后冷却的时候就会裂。还有,一件器物的表面要经过几道打磨的手续,打磨的时候着力重,容易使色料剥落。现在在表面粘上繁笔的铜丝图画,实际上就是把表面分成无数小块,小块面积小,无论热胀冷缩都比较细微,又比较禁得起外力,因而就不至于破裂、剥落。通常有一句话,叫(甲)。咱们在这儿套用一下,是制作方法和物理决定了景泰蓝掐丝的形式。咱们看见有些景泰蓝上面的图案画,在图案画以外,或是红地,或是蓝地,只要占的面积相当宽,那里就嵌几条曲成图案形的铜丝。为什么一色中间还要嵌铜丝呢?无非使较宽的表面分成小块罢了。 ——选自叶《景泰蓝的制作》7.对选文第3段的内容概括正确的一项是( ) A.说明了在铜胎上粘上繁笔的线条画的作用。 B.说明了在铜胎上粘上繁笔的线条画的原因。 C.说明了在铜胎上粘上繁笔的线条画的经过。 D.说明了在铜胎上粘上繁笔的线条画的影响。
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A.
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D.
A scientific standard should be adopted in job evaluation.
查看完整题目与答案
【单选题】It was more than a century ago that an engineer named Frederick Taylor walked into factories and starting timing workers with a stop watch. He dissected their movements and organized them more efficie...
A.
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D.
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【简答题】US Boy, 9, Plans to Take Balloon Flight Alone ALBUQERQUE. New Mexico — Bobby Bradley is ready. He has been training for about five years and learned from some of the most experienced and decorated...
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货物遭淡水雨淋
B.
货物遭淡水雨淋
C.
货物部分被偷窃
D.
货物遇台风和雷击被烧坏部分
E.
货物因船舶搁浅而水湿
F.
货物遭淡水雨淋
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【单选题】Based on excercise (1) and (2), which of the following statement is TRUE?
A.
If firms decides advertising prior to price, they becomes cautious to use informative advertising that aggreviate the price competition.
B.
If firms decides advertising prior to price, they tend to increase informative advertising so as to intensify the 2nd stage price competition.
C.
If firms decides advertising prior to price, the advertising is at the same level as if they set price and advertising simultaneously. Therefore, the competition intensity is not affected by the timing of the game.
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