1.单选题- (共3题)

A.F1始终增大,F2始终减小 | B.F1始终增大,F2先增大后减小 |
C.F1先减小后增大,F2先增大后减小 | D.F1先减小后增大,F2始终减小 |

A.φA>φB,EA>EB |
B.φA<φB,EA>EB |
C.φA<φB,EA<EB |
D.φA>φB,EA<EB |

A.I变大,U变小 |
B.I变小,U变小 |
C.I变小,U变大 |
D.I变大,U变大 |
2.选择题- (共2题)
补全对话
A:Good morning,Li Kai.What did you do last night?
B:{#blank#}1{#/blank#}
A:What's the name of it?
B:Lost in Thailand(《人在囧途之泰囧》).
A:Oh,I know it.{#blank#}2{#/blank#}
B:Yes.Wang Baoqiang is very famous in China now.
A:You're right.{#blank#}3{#/blank#}When he was fourteen years old,with only 500 RMB,he left his family and started a life in Beijing.
B:Wow !{#blank#}4{#/blank#}
A:Sure!I'm his fan.He is my favourite film star.I collect a lot of films about him.
B:Great!I also like his films.{#blank#}5{#/blank#}
A:No problem
A. He is from the countryside. B. Can I see his film with you ? C. Wang Baoqiang stars in the film. D. When did he marry? E. You know a lot about him. F. I went to the cinema to see a funny film. |
3.多选题- (共1题)
A.2m | B.3m | C.4m | D.8m |
4.解答题- (共1题)
规格 | 后轮驱动直流永磁电机 |
车型:20′′电动自行车 | 电机输出功率:175 W |
电源输出电压:≥36 V | 额定工作电压/电流:36 V/5 A |
整车质量:40 kg | 最大载重量:120kg |
(1)求此车所装电动机的线圈电阻。
(2)求此车所装电动机在额定电压下正常工作时的效率。
(3)一个60kg的人骑着此车,如果电动自行车所受阻力为人和车重的0.02倍,求电动自行车在平直公路上行驶的最大速度。
5.实验题- (共1题)

(1)除了图中已有的实验器材外,还需要导线、开关、刻度尺和________电源(填“交流”或“直流”);
(2)实验中,小车会受到摩擦阻力的作用,可以使木板适当倾斜来平衡摩擦阻力,则下面操作正确的是( )
A.放开小车,能够自由下滑即可
B.放开小车,能够匀速下滑即可
C.放开拖着纸带的小车,能够自由下滑即可
D.放开拖着纸带的小车,能够匀速下滑即可
(3)若木板水平放置,小车在两条橡皮筋作用下运动,当小车速度最大时,关于橡皮筋所处的状态与小车所在的位置,下列说法正确的是( )
A.橡皮筋处于原长状态
B.橡皮筋仍处于伸长状态
C.小车在两个铁钉的连线处
D.小车已过两个铁钉的连线
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【1】题量占比
单选题:(3道)
选择题:(2道)
多选题:(1道)
解答题:(1道)
实验题:(1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:0
5星难题:0
6星难题:2
7星难题:0
8星难题:3
9星难题:1