问题
选择题
| 如图所示，若闭合开关，则（ ）
A．两只表的示数都减小 B．两只表的示数都增大 C．两只表的示数都不变 D．电压表的示数增大，电流表的示数减小 |
答案
答案：C
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| 如图所示，若闭合开关，则（ ）
A．两只表的示数都减小 B．两只表的示数都增大 C．两只表的示数都不变 D．电压表的示数增大，电流表的示数减小 |
答案：C
| 选择适当的形式填空，需要时注意形式变化。 | |
2. People should stop cutting down the trees and help the animals in _________. 3. Jim _________ his bicycle too fast and fell off. As a result, he broke his leg. 4. It's not polite _________ with our parents even if they are wrong. 5. Parents are always _________ their kids with other children. 6. I don't think the new teacher will have a difficult time _________ who is who. 7. Tell us what was _________ at 10:30 am. What did you see? |
力（指每一对上下牙齿对咬时测得的力值）大小顺序为（）。