在建设工程质量管理的PDCA循环中，“C”表示（）。A．检查 B．计划 C．处置 D

提高植物光能利用率的途径和措施有哪些？

Questions from 36 to 40 are based on the following passage: China’s trade volume surged in 2010. The development wasn’t only in quantity, but also in quality — namely structure diversification.The European Union, the United States and Japan remained China’s top 3 largest trading partners in 2010.But trade volumes between China and other emerging economies increased also. Bilateral trade volumes between China and other BRIC nations — Brazil, Russia and India — all jumped more than 40 percent. That made India China’s tenth largest trading partner.Huang Guohua, Statistics Department Director of General Administration of Customs said “Trade volume between China and emerging economies increased faster than that with the traditional market. It indicates that China’s foreign trade is diversifying, and showing less dependence on the traditional partners. It’s a good way to reduce risks.”Data also shows that foreign trade volumes developed dramatically in China’s middle and western areas last year. Although the southern province of Guangdong still topped others in the total volume of import and export.Huang Guohua said “The export volume of middle and western areas surged over 40 percent year on year in 2010. The speed was 10 percentage points higher than the country’s total. It indicates that industrial structure has improved in these areas.”The import and export volume of private enterprises surged faster than the country’s average in 2010, with 47 percent year on year growth. Experts say China’s foreign trade development reduced dependence on foreign-funded enterprises.2010 imports and exports reached a historical high with a p sign that the country’s trade sector has shrugged off the global economic recession.

What indicates that industrial structure has improved in middle and western areas（）

A．Trade volumes between China and other emerging economies increased also.

B．Trade volume between China and emerging economies increased faster than that with the traditional market.

C．The southern province of Guangdong still topped others in the total volume of import and export.

D．The speed was 10 percentage points higher than the country’s total.

以下哪项是“视觉2020，享有看见的权利”的措施()

A．预防和控制疾病

B．培训人员

C．采用适当的技术

D．加强现有的眼保健设施和机构

E．动员和开发资源用于防治盲人等措施

MLSS是表示曝气池内活性污泥数量多少的指标

下列选项中，关于铸铁说法错误的是( )。

A．铸铁是铁合金的一种，与钢相比，其成分特点是碳、硅含量高，杂质含量也较高
B．杂质在钢和铸铁中的作用完全不同，如磷在耐磨磷铸铁中是提高其耐磨性的主要合金元素，锰、硅都是铸铁中的重要元素，唯一有害的元素是硫，铸铁的组织特点是含有石墨，组织的其余部分相当于碳的质量分数小于0.80%钢的组织
C．铸铁的韧性和塑性，主要决定于石墨的数量、形状、大小和分布，其中石墨形状的影响最大
D．按照铸铁成分中是否含有合金元素，可分为一般铸铁和合金铸铁两大类。一般铸铁可分为普通铸铁和变质铸铁