问题
选择题
用伏安法测灯泡的电阻时，若将电流表和电压表的位置接成如图所示的电路，可能出现的情况是：
A．电流表烧坏
B．电压表烧坏。
C．灯泡不亮
D．电压表的示数接近220伏
答案
CD
搜题请搜索小程序“爱下问搜题”
用伏安法测灯泡的电阻时，若将电流表和电压表的位置接成如图所示的电路，可能出现的情况是：
A．电流表烧坏
B．电压表烧坏。
C．灯泡不亮
D．电压表的示数接近220伏
CD
| 选用下列合适的形容词或副词的原级、比较级、最高级完成下列句子。 | |
2. Liu Ying talks _____ than Liu Li. 3. Li Hua is my friend. She's a little_____ than me. 4. Do you look the _____ as Tom? 5. Tom often exercises after class. He is _____ than me. 6. He is not as _____ at sports as his sister. 7. Paul is never _____! He can't stop talking. 8. Mr Wang is a _____ man. He always helps others. |