试题与答案

2011年4月1日~10月31日世界园艺博览会在中国西安举行.其理念为“绿色引领

题型:问答题

题目:

2011年4月1日~10月31日世界园艺博览会在中国西安举行.其理念为“绿色引领时尚”,回归自然、不事雕饰、绿色生活成为追求的时尚.自然馆(如图所示)是2011西安世园会的植物温室,主要展示地球上不同地域、不同气候带的珍稀植物及生态景观.建筑半埋地下,立面材料选用玻璃、木材与少量钢筋混凝土结合,倚山而建,层层叠叠,与地形完美结合,保证在建筑室内可以从不同标高领略湖面和对面花园的美景.请回答下列问题:

(1)木材属于______(填“天然材料”、“人造材料”中之一).

(2)玻璃的主要成分之一是硅酸钠(Na2SiO3),在硅酸钠中硅元素的化合价为______ 价.

(3)钢筋容易锈蚀,请写出一种防止铁生锈的方法:______.

(4)下列做法中,符合绿色化学理念的是______(填序号).

①猪饲料中掺入瘦肉精以获得更多的瘦肉

②自2011年5月1日起,禁止在面粉中添加增白剂

③为了可持续发展,将地沟油回收再利用.

答案:

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