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Passage 2 Green is not always referring to the color. In some cases, it is the term used for 1 ( environment ) friend ly . If you've been expecting to replace your furniture, consider 2 (go) green because green furniture offers many benefits. Here are a few tips to get you started on your hunt for the perfect eco-friendly furniture. First, green furniture isn't harmful 3 your health. Also its making process doesn't cause damage to the environment in any way. Besides, by using eco-friendly 4 (product), you prevent global warming to some degree in your own way. The materials 5 are used in furniture are what make them green. Materials can be good for the environment 6 because they are renewable resources or because they are all 7 (nature).A lack of chemicals in furniture als o 8 (mean) it is a better choice for the environment. It may be hard to imagine that a sofa or a table could actually be 9 green product, but they really can be depending on what they 10 (make) of. Therefore, when you want to hunt for the perfect green furniture, you should choose the green materials.
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【简答题】A、B是两种有刺激性气味的气体.试根据下列实验现象填空: (1)推断A→F各是什么物质(写化学式) A______、B______、C______、D______、E______、F______. (2)写出A、B跟水反应的离子方程式______.
【简答题】已知全集U=R,集合A={x||x-3|>1},B={x| ≤1}, (1)求集合A,B; (2)求集合A∩B,(C U A)∩(C U B)。
【单选题】1983年工资改革后,相关干部实行职务级别工资制(简称职级工资制),由四项组成,下述中不属于的是( )。
A.
性别工资
B.
职务工资
C.
级别工资
D.
工龄工资
【简答题】已知全集U=R,A={x|x 2 >4}, ,求A∩(C U B).
【简答题】已知全集U=R,集合A={x|2x 2 -x-6≥0}, B={x| 1-x x-3 ≥0} (1)求A∪B; (2)求? U (A∩B)
【简答题】已知全集U=R,集合 A={x| x+1 x-5 ≥0} ,B={x|x=t 2 -2t+5},求集合? U A∩B.
【简答题】A、B是两种有刺激性气味的气体.试根据下列实验现象填空 (1)推断A→F各是什么物质(写化学式) A________、B_______、C________、D________、E________、F________. (2)写出A、B跟水反应的离子方程式_____________________________
【简答题】某同学设计了下图装置来探究碳、硅元素的非金属性强弱,根据要求完成下列各小题 (1)实验装置: 填写所示仪器名称A____B____(2)实验步骤: 连接仪器、____、加药品后,打开a、然后滴入浓硫酸,加热。 (3)问题探究:(已知酸性强弱:亚硫酸>碳酸) 1铜与浓硫酸反应的化学方程式是____; 2装置E中的试剂为____,作用是____,反应方程式____; 3能说明碳元素的非金属性比硅元素非...
【单选题】根据现行税收相关法律、法规及司法解释规定, ( )。
A.
纳税人对税务所等法定授权派出机构超出法定授权范围实施税务行政处罚提起诉讼的,应当以税务所等机构为被告
B.
纳税人同税务机关在纳税问题上发生争议的,必须先缴清税款和滞纳金才能向上一级税务机关申请复议
C.
纳税人对税务行政处罚决定不服申请复议后又依法撤回申请,并在法定期间内对原税务具体行政行为提起诉讼的,人民法院不予受理
D.
纳税人对税务行政处罚决定不服已经申请复议,在法定复议期间内又起诉的,人民法院应当受理
【简答题】已知全集U=R, ,求 , ∩ , , 。
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