工作面(被照面)
参考答案：
通常指完成工作之处，于该处照度定有标准并予量测。除非特别声明，一般假设其位于地板上方0.76米（30吋）之水平面上。
第II卷
第三部分写作:（共二节，满分40分）
Ⅳ. 第一节短文改错：（共10小题; 每小题1分, 满分10分）
下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏字符号（∧），并在其下面写上该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下面划一横线，并在该词下面写上修改后的词。
注意：1. 每处错误及其修改均限一词；
2.只允许修改10处，多者（从11处起）不计分。
On Monday morning, I was on my way to school when suddenly as I saw a boy knocked down by the car. In a hurry, I ran over and found the boy was serious hurt with much blood on his face. Immediately, I call an ambulance and the boy was taken to the nearest hospital. For my relief, the boy was fine and would recover in a few day. I went away without giving his name. I was late for class, and I felt happy for what I had done. As a proverb says, “ Help others is the source of happiness.” I feel our duty to make the world a better place to live in.
如图所示，一质量为m=0.016kg、长L=0.5m、宽d=0.1m、电阻R=0.1Ω的矩形线圈，从h1=5m的高处由静止开始下落，然后进入高度为h2（h2＞L）的匀强磁场．下边刚进入磁场时，线圈正好作匀速运动．线圈的下边通过磁场所经历的时间t=0.15s．取g=10m/s2
（1）求匀强磁场的磁感应强度B．
（2）求线圈的下边刚离开磁场的瞬间，线圈的加速度的大小和方向．
（3）在线圈的下边通过磁场的过程中，线圈中产生的焦耳热Q是多少？通过线圈的电荷量q是多少？
