2022广东公安考试答案

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1、If the electric flux through a closed surface is 0, then there is no net charge inside the surface.
A:正确; B:错误
答案：正确
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2、Gauss's law is valid only when the charge distribution is highly symmetric.
答案：错误
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3、The linear integral of electrostatic field along a closed path is determined by the net charge inside.
A:正确; B:错误
答案：错误
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4、过共析钢因过热而析出网状渗碳体组织时，可用下列哪种工艺消除
A、完全退火
B、等温退火
C、球化退火
D、正火
答案：C
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5、The second law of thermodynamics has many different statements, which of the following statements is NOT CORRECT?
A、100% efficiency is impossible for a heat engine.
B、Heat cannot transfer from cold object to hot object.
C、Things tend to change toward a state of greater disorder.
D、The entropy of an isolated system will not decrease.
答案：Heat cannot transfer from cold object to hot object.
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6、4.10个人随机地围绕圆桌而坐，其中甲和乙两个人坐在一起的概率是____。
A、1/5
B、3/10
C、2/9
D、1/3
答案：2/9
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7、高而持久的通货膨胀的原因是（ ）
A、工会使工资增加得太多了
B、欧佩克使石油价格上升得太高了
C、政府增加的货币量太多了
D、管制使生产成本增加得太多了
答案：政府增加的货币量太多了
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8、A conductor in electrostatic field is an equipotential body, any two points on the conductor have the same electric potential.
A．It can use computers to check the design.
B．It already has enough experience with plans.
C．It will only need to upgrade the replica of the previous model.
D．It can make sure all the bits fit together.
答案：A
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9、在VB语言中，可以用来与字段相绑定的控件是（ ）
A、图像框控件
B、文本框控件
C、标签控件
D、命令按钮控件
答案：文本框控件
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10、When using Ampere’s law, we have to know how much the current passing through the area enclosed by the chosen path is. In the following figure,
答案：1
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11、当数据分布有对称的集中趋势时，均值()。
A、趋于变量值大的一方 B、趋于变量值小的一方 C、趋于权数大的变量值 D、趋于哪方很难判定
答案：C
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12、以下是安全进行实验工作的基本要素,哪一项不对
A . 取用酸、碱等腐蚀性试剂时，应特别小心，不要洒出
B . 废酸液和废碱液可倒入同一个废液缸中处理
C . 在热天取用氨水时，最好先用冷水浸泡氨水瓶，使其降温后再开瓶取用
D . 对某些强氧化剂（如氯酸钾、硝酸钾、高锰酸钾等）或其混合物，不能研磨，否则将引起爆炸
答案：B
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13、服务员在开启瓶盖时要注意把握瓶体平稳，以免酒水冲出喷到客人。
答案：对
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14、For electrostatic field, there are no closed field lines.
答案：正确
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15、The inductance of an electric device is independent of the electric current it carries.
答案：正确
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