试题与答案

“危局如斯敢惜身?愿将生命作牺牲”是女革命家秋瑾的豪迈诗篇。她在同盟会成立后领导的武

题型:单项选择题

题目:

“危局如斯敢惜身?愿将生命作牺牲”是女革命家秋瑾的豪迈诗篇。她在同盟会成立后领导的武装起义是

A.浙皖起义

B.黄花岗起义

C.萍浏醴起义

D.镇南关起义

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B, C, D解析:根据盈亏平衡法,该企业若想盈利,应采取的对策有降低固定成本、适当降低变动费用、提高价格。

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题型:阅读理解

阅读理解。

     Life is like the four seasons. Now I am very old, but when I was young, it was the spring of my life.

I played a lot, and then I started school. I learned many new things. Like a flower, I grew bigger every day.

There were happy days and sad days, some days the sun shone, and some days it didn't. In my twenties, I

had a good job. I was strong and happy. Then I married and had a child. In those days I didn't have much

time to think or to play. Every day I was busy and worked hard. I started to get some white hair. The

summer of my life passed quickly.

     Then the days got shorter. Leaves fell from the trees. My child was a university student and then an

engineer. My home was much quieter. I started walking more slowly. One day I stopped working, I retired.

I had more time. I understood this was my autumn, a beautiful time when the trees change color and give us

delicious fruits.  

     But the days kept getting shorter and colder. Winter has come. I am older and weaker. I know I do not

have many days left, but I will enjoy them to the end.

1. What does the writer think his life is like?

A. spring

B. summer

C. autumn

D. four seasons

2. The writer was very busy in the _______ of his life.

A. spring

B. summer

C. autumn

D. winter

3. According to the passage, which of the following ages is during the autumn of his life?

A. 15

B. 33

C. 62

D. 87

4. The best title of the passage can be _______.

A. Four Seasons.

B. Four Seasons in My Life.

C. Four Season In a Year

D. My Life

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题型:计算题

某课外小组设计了一种测定风速的装置,其原理如图所示,一个劲度系数k=120 N/m,自然长度10=1m弹簧一端固定在墙上的M点,另一端N与导电的迎风板相连,弹簧穿在光滑水平放置的电阻率较大的金属杆上,弹簧是不导电的材料制成的。迎风板面积s=0.5 m2,工作时总是正对着风吹来的方向,电路的一端与迎风板相连,另一端在M点与金属杆相连,迎风板可在金属杆上滑动,且与金属杆接触良好,定值电阻R=1.0Ω,电源的电动势E=12 V,内阻r=0.5Ω。闭合开关,没有风吹时,弹簧处于原长,电压表的示数U1=9.0 V,某时刻由于风吹迎风板,电压表的示数变为U2=6.0V(电压表可看作理想表)。求:

(1)金属杆单位长度的电阻;

(2)此时作用在迎风板上的风力。

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