1.单选题- (共11题)







A.线框中的感应电动势![]() |
B.![]() ![]() |
C.在线框被拉入磁场的整个过程中,线框中产生的热量![]() |
D.维持线框以恒定的速率被拉入磁场的外力大小为![]() |





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





A.回路中电流方向为顺时针方向 |
B.回路中电流方向为逆时针方向 |
C.不管条形磁铁下端是何极,两棒均互相靠近 |
D.金属棒对导轨的压力将减小 |

A.静止 |
B.随磁铁同方向转动 |
C.沿与磁铁相反方向转动 |
D.要由磁铁具体转动方向来决定 |







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

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

A.输电线上的电流变为原来的![]() |
B.输电线上的电压损失变为原来的![]() |
C.输电线上的电功率损失变为原来的![]() |
D.若输电线上的电功率损失不变,输电线路总电阻可变为原来的![]() |
2.选择题- (共3题)
阅读短文,完成下列问题。
A
In the film The Revenant the Leonardo DiCaprio adventure takes the basic facts of real-life frontiersman Hugh Glass's sufferings and adds extra characters, extra ultra violence and more horse guts.
Hugh Glass was a frontiersman working in the upper Missouri river area in the early years of the 19th century. On a fur trapping expedition in 1823, he was attacked and injured by a grizzly bear.
_____________
Hugh Glass (Leonardo DiCaprio) is one of a group of men finishing up a fur trapping expedition in the wilderness. They are attacked by Ree (Arikara) warriors. Whoosh! Someone gets impaled on a spear. Bang! Someone gets shot off his horse. Crack! Someone's bones shatter. There's a fearless close-up of an arrow thwacking into a face, a gun butt bashing into a face, a flying kick to a face. A horse gets shot in the face. It's exceptionally well choreographed (取景) and filmed.
This scene is based on a real-life incident: In June 1823, Ashley's band of around 70 men was attacked by Arikara warriors –they estimated around 600, though in the film it's more like a dozen.
Characters
In the film, 10 men get away. Fitzgerald is a fighter and racist, so he's the bad guy. Glass is the good guy, because he loves his son (who is half-Pawnee) in a gruff, manly way that involves telling him off a lot. The back story about Glass's love for a Pawnee woman is fiction. It has been suggested the real Glass had such a relationship, but there's no firm evidence –and no evidence that he had any children.
Wildlife
As the men make their way through a forest, Glass happens upon two bear cubs and their angry mama. If you felt pale after the face-smashing scene at the start, reach for the smelling salts. Chomp! Growl! Shake! The bear sniffs him to see if he's dead, then jumps up and down on his back. Splinter! Howl! Slash! Glass shoots the bear. Anyway, while historians are not certain of the precise details, the real Glass did get into a fight with a real bear, sometime in August 1823.
Murder
The men find Glass in a rum old state. Captain Henry pays Fitzgerald, Bridger and Hawk to stay behind until it is time for Glass's inevitable burial. When the captain leaves, Fitzgerald tries to bump Glass off. Hawk interrupts, so Fitzgerald bumps him off instead. This didn't happen in real life, because Hawk didn't exist. In the film, the weak Glass sees Fitzgerald kill his son, giving him an extra motivation to stay alive and seek revenge.
Survival
The real Glass survived his abandonment and dragged his battered body over hundreds of miles of terrain in pursuit of the men who left him for dead. Though he could read and write, Glass never set his story down in his own hand. It was first published by another writer in a Philadelphia journal in 1825. It may well have been modified then. It has been modified many times since.
Hardship
The film has invented some extra obstacles for Glass: it is snowing throughout, even though in real life his trek took place between August and October; the Arikara track him and chase him into a tree; he has to hollow out a dead horse to make himself a sleeping bag. As for the ending, it has been changed in one significant way: in real life, nobody got killed.
3.多选题- (共3题)





A.这列波的振幅为![]() |
B.这列波的波速为![]() |
C.这列波的传播方向为沿![]() |
D.此时![]() |

A.导线中的电流变大 |
B.线框向右平动 |
C.线框向下平动 |
D.线框以![]() |
4.填空题- (共2题)



5.解答题- (共5题)




(1)当t=0.1s时,通过金属棒ab的感应电流大小和方向.
(2)当t=0.1s时,金属棒ab受到的安培力的大小?







(1)金属杆

(2)在金属杆



(1)交流发电机产生的电动势最大值;
(2)电路中交流电压表的示数.

6.作图题- (共1题)
-
【1】题量占比
单选题:(11道)
选择题:(3道)
多选题:(3道)
填空题:(2道)
解答题:(5道)
作图题:(1道)
-
【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:0
5星难题:0
6星难题:5
7星难题:0
8星难题:10
9星难题:7