题干
设
是空间两条直线，
,
是空间两个平面，则下列选项中不正确的是（ ）
是空间两条直线，,是空间两个平面，则下列选项中不正确的是（ ）
A：当时，“”是“”的必要不充分条件
B：当时，“”是“”的充分不必要条件
C：当时， “![](http://tiku.21cnjy.com/tikupic/a4/54/a4154b17e35b8400f3513ad </p>
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<a href="/question/3941542.html">上一题</a> <a href="/question/3941544.html">下一题</a> 0.0难度 选择题 更新时间:2015-05-05 03:54:38
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<h2 class="title daan" data="3941543">答案(点此获取答案解析）</h2>
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A
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<h2 class="title">同类题1</h2>
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关于下图的叙述不正确的是（ ） <p ><img width=178 height=114 src="/Upload/site3/9/7/979d39cde4b5757846dfcf3887a63658.png" v:shapes="_x0000_i1060"></p>
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<h2 class="title">同类题2</h2>
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夏天买回的豆腐，存放时间稍长就会变质．有同学提出，在水里加入适量的盐，再将豆腐浸泡在其中，就能延长保鲜时间．小明为了探究这一方法，设计了如下实验： <p >根据以上资料回答问题：</p>
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<h2 class="title">同类题3</h2>
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下列有关物质的性质和该性质的应用均正确的是（ ）
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<h2 class="title">同类题4</h2>
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如图，过抛物线x<sup>2</sup>=2py（p＞0）的焦点F的直线l交抛物线于AB，交其准线于点C，若|BC|=2|BF|，且|AF|=2，则p=（ ） <p ><img width=180 height=164 src="/Upload/site3/c/b/cb21e32663594056357d2c973ae42336.png" v:shapes="_x0000_i1116"></p>
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<h2 class="title">同类题5</h2>
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假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。<p>增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。</p><p>删除：把多余的词用斜线（\）划掉。</p><p>修改：在错的词下划一横线，并在该词下面写出修改后的词。</p><p>注意：1).每处错误及其修改均仅限一词；</p><p>2).只允许修改10处，多者（从第11处起）不计分。</p><p> Last Saturday I took bike trip to the nature park together with three of my friends in the breeze (微风), there we went for sighting. In the forest, we saw a number of plant and knew a lot about them. And then we go to a patch of grass that was full of wild flowers. We lay in the sun quietly, enjoyed the fresh air. The sight was very amazing that we didn)
It was really an unforgettable weekend because they learned a lot about plants. With addition, we relaxed ourselves by enjoying the beauty of nature.