试题与答案

已知匀强电场中三点A、B、C的电势分别为12V、4V、-4V,请用刻度尺和三角板

题型:应用设计题

题目:

已知匀强电场中三点A、B、C的电势分别为12V、4V、-4V,请用刻度尺和三角板画出场强方向,保留作图痕迹并简要写出作图步骤。(电场方向在纸面内)

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C

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(        )1. The girl is good at playing a piano.                              ____________________

                  A            B   C            D

(        )2. December is the twelve month in a year.                      ____________________

                    A           B      C                    D

(        )3. Dalian has a history of more than 100-years.                ____________________

                         A  B                      C              D

(        ) 4. That red bus stoped at the bus stop ten minutes ago.    ____________________

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(        ) 5. She made her first movie when was she three.             ____________________

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