问题
选择题
We all consider ________ important that we should put theory into practice.[ ]
A. that
B. which
C. this
D. it
答案
答案:D
We all consider ________ important that we should put theory into practice.[ ]
A. that
B. which
C. this
D. it
答案:D
某实验小组用伏安法测量一个定值电阻的阻值,现有实验器材如下表
器 材 | 代码 | 规 格 |
待测电阻 | Rx | 约100Ω |
电流表 | A1 | 量程0~30mA,内阻50Ω |
电流表 | A2 | 量程0~200mA,内阻10Ω |
电压表 | V | 量程0~3V,电阻5kΩ |
稳压电源 | E | 输出电压4V,内阻不计 |
滑动变阻器 | R1 | 阻值范围0~1KΩ,允许最大电流0.5A |
滑动变阻器 | R2 | 阻值范围0~15Ω,允许最大电流1A |
开关一个,导线若干 |
(2)在实物图中完成其余连线使之成为完整的实验电路。