下列人员实施消防违法行为不予行政处罚:()。
A、年龄不满16岁
B、年龄不满14岁
C、不能辨认和控制自己行为的精神病人
D、又聋又哑的人
参考答案:B, C
单句改错。
1. Your friend comes to school is very upset. _________
2. Tell your friend that you are concerning about him. _________
3. While walk the dog, you were careless and it got loose. __________
4. Join the examination and you'll get a chance. __________
5. Yesterday I got my bike repair. __________
两级反相式阻容振荡器的电阻R一般应不小于10kΩ,电容C一般应不小于100pF,否则会使电路起振困难。