已知.求tanα的值;

题型:问答题

问题:

已知

求tanα的值;

考点:教师招聘考试中学教师招聘笔试广西省教师公开招聘考试中学数学真题2010年
题型:问答题
阅读短文,然后在下面的表格中完成内容提要,每空不超过3个单词。
                                              New Energy in the Twenty-first Century
Energy from the wind
     Wind is a kind of clean energy, and there is lots of it, but, if there's no wind, there is no wind energy.
Energy from the water
     When water moves from a high place to a lower place, it can make electricity (电) without pollution.
However, people have to build dams (水坝) to use this energy, and building dams is very expensive.
Energy from the earth
     There is heat in the rocks under the earth. Scientists use the heat to make geothermal (地热的) energy.
This kind of energy is cheap, but it is only possible in a few places in the world.
Energy from the sun
     Solar panels (太阳电池板) on the roofs of houses can turn energy from the sun into electricity. Solar
power is clean and plentiful (丰富的), but when the weather is bad. It doesn't work.
                                  New Energy in Twenty-first Century
Advantages Disadvantages
Wind Energy Clean.There is a lot. It needs 1______.
Water Energy2______It is expensive.
Geothermal Energy 3______only possible in a few places.
Solar Energy Clean and plentiful. It depends too much on 4______.
题型:问答题
直接写出得数.
150÷30=
14×6=350÷5=8×12=
91÷7=400÷80=26×3=90÷15=
题型:问答题

钢轨的类型是以kg/m来表示,钢轨每米重量越小,说明其抗冲击、弯曲、振动的能力越强,承载力越大。

题型:问答题

十一届全国人大一次会议《政府工作报告》中指出:根据国内外经济形势和宏观调控任务的要求,2008年要实行稳健的财政政策和从紧的货币政策。下列属于从紧的货币政策的有()

①央行连续上调银行存贷款基准利率②优化财政支出结构

③上调印花税④央行上调银行存款准备金率

A.①②

B.③④

C.①④

D.②③

题型:问答题

有关尿干化学检测原理,酮体测定用()

A.葡萄糖氧化酶法

B.亚硝基铁氯化钠法

C.吲哚酚法

D.指示剂法

E.重氮试剂法

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