1.单选题- (共8题)

为C球自由下落的运动轨迹.通过分析上述三条轨迹,可得出结论
A.平抛运动水平方向的分运动是自由落体运动 |
B.平抛运动竖直方向的分运动是匀速直线运动 |
C.平抛运动可分解为水平方向的自由落体运动和竖直方向的匀速直线运动 |
D.平抛运动可分解为水平方向的匀速直线运动和竖直方向的自由落体运动 |
A.它的周期与地球自转同步,但高度和速度可以选择,高度增大,速度减小 |
B.它的周期、高度、速度的大小都是一定的 |
C.我国发射的同步通讯卫星定点在北京上空 |
D.不同的同步卫星所受的向心力相同 |
A.50J | B.200J | C.500J | D.4000J |
A.若路面光滑,拉力所做的功较小 | B.若路面粗糙,拉力所做的功较大 |
C.若小车载有货物,拉力所做的功更大 | D.以上三种情况中,拉力做的功一样大 |
2.选择题- (共7题)
完形填空
I have a good friend. His name is Tom. He is a nice boy, but he eats too1 and doesn't like sports. He has a big2 every morning. He has four eggs, 3 of bread and butter and 4 big glass of milk for it. 5 lunch, he eats two hamburgers, a lot of French fries of chicken. He 6 a lot of cola or soda, too. For dinner, he likes beef and salad. He7 eats beef, chicken, hamburgers, and eggs. He likes ice cream, cola and soda, 8. Too much food is not 9 for health. So Tom is very 10.
完形填空
I have a good friend. His name is Tom. He is a nice boy, but he eats too1 and doesn't like sports. He has a big2 every morning. He has four eggs, 3 of bread and butter and 4 big glass of milk for it. 5 lunch, he eats two hamburgers, a lot of French fries of chicken. He 6 a lot of cola or soda, too. For dinner, he likes beef and salad. He7 eats beef, chicken, hamburgers, and eggs. He likes ice cream, cola and soda, 8. Too much food is not 9 for health. So Tom is very 10.
3.多选题- (共4题)

A.大轮边缘的角速度等于小轮边缘的角速度 |
B.大轮边缘的角速度小于小轮边缘的角速度 |
C.大轮边缘的线速度等于小轮边缘的线速度 |
D.大轮边缘的线速度小于小轮边缘的线速度 |

A.两滑块在A处的重力势能相等 |
B.两滑块滑到斜面底端时的动能相等 |
C.两滑块滑到斜面底端时的速度相等 |
D.滑动过程中两滑块的加速度相等。 |

A.手对物体做功2J |
B.合外力做功2J, |
C.合外力做功12J |
D.物体克服重力做功10J |
4.解答题- (共1题)
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【1】题量占比
单选题:(8道)
选择题:(7道)
多选题:(4道)
解答题:(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:1
7星难题:0
8星难题:12
9星难题:0