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问题 选择题

如图所示，电源电压保持不变．只闭合开关S1，灯泡L正常发光，再闭合开关S2，则 

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A．电流表示数变大，灯变亮  

B．电流表示数变小，灯变暗  

C．小灯泡的额定功率变大  

D．电路中的总功率变大

答案

答案：D

改错题

Time flies as an arrow. I'm already in the second half   1.______

of senior grade 3 before I realized it. It is only a little more 2.______

than three months before I graduate middle school. At        3.______

the present, I'm busy reviewing my lessons in order to         4.______

take the college entrance examination. I hope to go to         5.______

Beijing University, that is one of the best universities not     6.______

only in China but also in the world. I'll try my best to turn     7.______

my dream to reality. Most of my classmates are also   8.______

studying very hard to realize our wishes. I do believe everyone     9.______

will be able to enter a very good university and college.            10._____
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单项选择题

水文资料推求设计值时，应进行可靠性、一致性、代表性审查，特大洪水加入主要增强样本的（）。

A.准确性

B.可靠性

C.代表性

D.一致性
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