为何要对纱线进行清纱?清纱方式有哪些?各有何特点?如何选择?

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问题:

为何要对纱线进行清纱?清纱方式有哪些?各有何特点?如何选择?

考点:纺织科学技术棉纺学棉纺学题库
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在同方向有2条车道的高速公路左侧车道行驶时,车速不能低于110公里/小时。

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瘤体内含有骨骼及毛发的肿瘤,是

A.胸腺瘤
B.畸胎瘤
C.心包囊肿
D.神经源性肿瘤
E.淋巴源性肿瘤

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2007年8月1日,甲公司通过增发1000万股(每股面值1元)自身的股份取得对乙公司20%的股权,按照增发前后的平均股价计算,该1000万股股份的公允价值为1500万元。为增发该部分股份,甲公司支付丁30万元的佣金和手续费。 2007年8月1日甲公司对乙公司长期股权投资的初始成本为( )万元。

A.1000

B.1500

C.1530

D.1470

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When workers become more efficient, it’s normally a good thing. But lately, it has acted as a powerful brake on job creation. And the question of whether the recent surge in productivity has run its course is the key to whether job growth is finally poised to take off.

One of the great surprises of the economic downturn that began 27 months ago is this.. Businesses are producing only 3 percent fewer goods and services than they were at the end of 2007, yet Americans are working nearly 10 percent fewer hours because of a mix of layoffs and cutbacks in the workweek.

(46) That means high-level gains in productivity--which in the long run is the key to a higher standard of living but in the short run contributes to sky-high unemployment. So long as employers can squeeze dramatically higher output from every worker, they won’t need to hire again despite the growing economy.

(47) On Friday, the Labor Department will release a closely watched March employment report expected to show the pest job growth in three years, driven by stabilization in the economy and a rebound from February snowstorms.

A p March job-growth number-at a time when the economy is growing at only a middling pace--would suggest that the productivity boom has largely run its course. (48) Regardless, the question of what caused the burst in workers’ efficiency is one of the great unanswered questions of the expansion and has huge stakes for the economy over the coming year.

"It is an episode that we’re going to--we, economists in general--are going to want to understand better and look at for a long time," Federal Reserve Chairman Ben S. Bernanke said at a hearing last week in which he described the productivity gains as "extraordinary" and acknowledged he had not foreseen them.

(49) Businesses have certainly not been investing in new equipment that might enable workers to be more efficient-capital expenditures plummeted during the recession and are rebounding slowly. (50) And the structural shifts occurring in the economy are so profound that one would expect productivity to be lower, rather than higher, as people need new training to work in parts of the economy that are growing, such as exports and the clean-energy sector.

So what’s happening As best as anyone can guess, the crisis that began in 2007 and deepened in 2008 caused both businesses and workers to panic.

(50) And the structural shifts occurring in the economy are so profound that one would expect productivity to be lower, rather than higher, as people need new training to work in parts of the economy that are growing, such as exports and the clean-energy sector.

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针对交通干线(高速公路、铁路)、城市边界测试异常事件认定,特做如下规定:所有测试事件以测试时MS所在行政区域确认,而不是以MS占用小区所属的行政区确定,即事件发生地点在某个行政区内,则该事件计入该行政区的考核中。

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