美国历史学家费正清在《ChinaWatch》一书中写道:“他们每天都亲眼目睹少年

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问题:

美国历史学家费正清在《ChinaWatch》一书中写道:“他们每天都亲眼目睹少年们在‘阶级斗争’的借口下,对长辈进行抢劫、报复、打骂和侮辱;他们必须出席公开批判邻居、朋友、同事和父母的大会,甚至还要积极发言。……”费正清笔下的历史事件[ ]

A.严重践踏了中国的民主、法制

B.促进了中国文化的发展

C.发生在20世纪50年代

D.体现了启蒙思想的自由、平等

考点:“文化大革命”对民主法治的践踏
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在钢铁腐蚀过程中,下 * * 种变化可能发生的是①O2被还原②产生H2③Fe(OH)3失水形成Fe2O3•xH2O④杂质碳被氧化⑤用铝质铆钉铆接铁板,铁板易被腐蚀(  )

A.①②

B.②③④

C.①②③

D.①②③④⑤

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景观设计当中的场所是指发生事件的空间,作为场所的空间,以下哪个条件说法不正确()。

A.有适合某种活动的空间容量,才能接纳使用者的光顾

B.有人流的集结和疏通的交通条件,最好是就近、顺路和捷径到达

C.有完成相应社交活动的有效场地保障,实现空间最大空间

D.有适合某种活动内容的空间形式,才具备功能载体的条件

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发生煤气中毒事故的原因复杂,与()、()、()即()、违反规章制度、()等因素有关。简单地说,既有()造成的客观原因,也有()造成的主观原因。

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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.

(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.

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当有哪些情况时,应进行静载弯曲抗裂性及挠度试验?

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