1.选择题- (共3题)
My first visit to Angkor Wat was in 1980. The country had been at war for many years and the temple was deserted and falling to pieces. Plants were growing out of the roofs, and trees were growing in the courtyards.
Today, the temple is the scene of a busy repair programme. A team of 15 Indian experts are organizing a workforce of 400 Cambodians, most of them women, who are cleaning, repairing and rebuilding parts of this temple.
As I walked through the courtyards, I noticed the Cambodian women devote hours to cleaning carefully a tiny area of stone. Boards are laid down to protect the precious painted stones while the repair work is going on. There are very few machines and little heavy equipment. Workers carry building materials in buckets at the end of long poles. Piles of stones lie in a corner of the courtyard, waiting to be replaced.
The work of cleaning the stones is watched over by three Indian chemists. It is a very slow task. First they clean the stones with brushes using buckets of a weak chemical. Then gaps between the stones are filled in. Finally another material is painted onto the stones which will protect them from water forever.
Work starts every day at 7 a. m. and goes on until late afternoon six days a week, with a break at midday.
Evening is the best time to visit the temple, after the tour groups have left. As the sun sinks lower, shadows spread across the courtyard. After sunset, the sky turns pink. The grey stone towers take on a golden colour before turning pink. Nowhere else in the world can there be such a quiet, beautiful place.
2.单选题- (共8题)

A.不产生感应电流 |
B.产生的感应电流方向如图所示 |
C.产生的感应电流方向与图中所示相反 |
D.有无感应电流不能肯定,因条件不够 |

A.无感应电流 |
B.有顺时针方向的感应电流 |
C.有逆时针方向的感应电流 |
D.无法确定 |

A.![]() | B.![]() |
C.![]() | D.![]() |

A.穿过圆环的磁通量减少,圆环中有逆时针方向的感应电流 |
B.穿过圆环的磁通量增加,圆环中有顺时针方向的感应电流 |
C.穿过圆环的磁通量增加,圆环中有逆时针方向的感应电流 |
D.穿过圆环的磁通量不变,圆环中没有感应电流 |

A.顺时针加速旋转 | B.顺时针减速旋转 |
C.逆时针加速旋转 | D.逆时针减速旋转 |

A.若M、N接交流电,则IL=0、IC≠0 |
B.若M、N接交流电,则IL≠0、IC≠0 |
C.若M、N接恒定电流,则IL≠0、IC=0 |
D.若M、N接恒定电流,则IL≠0、IC≠0 |
3.填空题- (共3题)


4.解答题- (共2题)

(1)此满偏的电表是什么表?说明理由;
(2)拉动金属棒的外力F多大?
(3)此时撤去外力F,金属棒将逐渐慢下来,最终停止在导轨上.求从撤去外力到金属棒停止运动的过程中通过电阻R的电荷量.




(1)油滴在第三象限运动时受到的重力、电场力、洛伦兹力三力的大小之比,并指出油滴带何种电荷;
(2)油滴在P点得到的初速度大小:
(3)油滴在第一象限运动的时间。
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【1】题量占比
选择题:(3道)
单选题:(8道)
填空题:(3道)
解答题:(2道)
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【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:2
5星难题:0
6星难题:1
7星难题:0
8星难题:9
9星难题:1