题目内容

以下有关部分电路欧姆定律的说法正确的有()。
A它用于分析通过电阻的电流与端电压的关系
B部分电路欧姆定律的数学表达式是I=U/R
C部分电路欧姆定律的数学表达式是I=R/U
D该定律表明,当电阻一定时,通过电阻的电流与电阻两端的电压成正比

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以下有关导体电阻与温度关系说法正确的有()。
A当温度升高时,电解液和碳素物质的电阻增大
B当温度升高时,金属导体的电阻减小
C当温度升高时,电解液和碳素物质的电阻减小
D当温度变化时,如康铜等某些合金的电阻几乎不变化

有关电路中电流流向的说法,正确的有()。
A在电源内部从电源的负极流向正极
B从负载的负极流向正极
C在外电路中从电源的正极流向负极
D在外电路中从电源的负极流向正极

当导体横截面上()不随时间变化的电流称为直流电流。
A电压的大小
B电流的方向
C电流的大小
D电压的方向

SECTION B ENGLISH TO CHINESE
Directions: Translate the following text into Chinese.
In the Gazzette that reported the death of George, Rawdon Crawley's brave conduct was mentioned with honour, and his promotion to the rank of colonel recorded. His aunt's heart was not softened, nor did time have a healing influence.
Becky and her husband went to Paris and passed the winter in great splendour and enjoyment. Rebecca was a good manager, and the price Jos Sedley had given for her two horses was in itself enough to pay their expenses for a year. Her success was remarkable. All the French ladies thought her charming. She spoke their language admirably and she adopted their grace and gaiety of manner. "Why," wrote a great lady to Miss Crawley, who had many friends among the French nobilities, "does not our dear miss come to her nephew and niece？ All the world admires the charming Mrs. Crawley. The King took notice of her yesterday. To hear her speak of you brings tears to the eyes. How she loves you !"
The fury of the old lady knew no limit when she realized that Rebecca had made use of her name as an introduction to society, and when, early next year, she heard that Becky had borne a son, her rage rose to its height. She sent in haste for her lawyer and made a new will leaving everything to her elder nephew Pitt.