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【简答题】
完形填空。 In England, most of families like journey. They usually have a holiday 1 spring. It's a good time for 2 . It's not very hot and not very cold during that time. Children don't go to school. Many families like to go to 3 for Tower Bridge, and others like to go to Cambridge. They are very 4 in their country. Some people like to stay at home 5 the holiday. They 6 books, visit friends, work in the garden of their family, and watch TV. Many families of a city have their lunch in a park or 7 . They like to eat where there are many trees or there is a nice lake. If they live near the sea, they often go to the 8 . They can fish, swim or enjoy 9 there. Many families have a journey by train or by 10 to visit other places. They also travel by plane to a foreign country. (     )1. A. for (     )2. A. staying (     )3. A. Paris (     )4. A. excellent (     )5. A. during (     )6. A. see (     )7. A. countryside (     )8. A. river (     )9. A. fishing (     )10. A. car B. in B. leaving B. London B. bored B. in B. watch B. restaurant B. zoo B. skating B. plane C. on C. traveling C. Sydney C. exciting C. at C. look C. museum C. beach C. swimming C. a car D. at D. going D. Rome D. famous D. to D. read D. city D. park D. sunbathing D. a taxi
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【单选题】如图所示,在一辆表面光滑的小车上,放有质量分别为m1、m2的两个小球,随车一起作匀速直线运动.当车突然停止运动,则两小球(设车无限长,其他阻力不计)( )
A.
一定相碰
B.
一定不相碰
C.
若m1
D.
无法确定是否相碰
【判断题】在GUI设计中,单选按钮用来实现用户在多个选项中的互斥选择,在同一组内多个选项中只能选择一个,当选择发生变化之后,之前选中的选项自动失效。
A.
正确
B.
错误
【判断题】在特色小镇建设中,人是最主要的构成细胞。()
A.
正确
B.
错误
【简答题】一个班人数在30~~50人内,分别按8人一组和12人一组,都正好分完,这个班有多少人?
【单选题】如图所示,在一辆表面光滑的小车上,放有质量分别为 m 1 、 m 2 的两个球,随车一起匀速运动,当车突然停止运动,其他阻力不计,设车无限长,则两小球( )
A.
一定不相碰
B.
一定相碰
C.
若 m 1 > m 2 ,则肯定相碰
D.
若 m 1 < m 2 ,则一定不相碰
【单选题】图片6.png 4 .由两种不同材料拼接成的直轨道 ABC , B 为两种材料的分界线,长度 AB > BC . 先将 ABC 按图甲方式搭建成倾角为 θ 的斜面,让一小物块 ( 可看作质点 ) 从斜面顶端由静止释放,经时间 t 小物块滑过 B 点;然后将 ABC 按图乙方式搭建 成倾角为 θ 的斜面,同样将小物块从斜面顶端由静止释放,小物块经相同时间 t 滑过 B 点.则小物块 ( )
A.
.与 AB 段的动摩擦因数比与 BC 段的动摩擦因数大
B.
.两次滑到 B 点的速率相同
C.
.两次从顶端滑到底端所用的时间相同
D.
.两次从顶端滑到底端的过程中摩擦力做功相同
【单选题】如图所示,在一辆表面光滑的小车上,放有质量分别为 m 1 、 m 2 的两个小球,随车一起作匀速直线运动.当车突然停止运动,则两小球(设车无限长,其他阻力不计)( )
A.
一定相碰
B.
一定不相碰
C.
若 m 1 ﹥ m 2 , 则肯定相碰
D.
无法确定是否相碰
【判断题】二级维护由维修企业进行,以清洁.紧固.润滑为中心内容。
A.
正确
B.
错误
【判断题】表寒肺热证的代表方是麻杏石甘汤
A.
正确
B.
错误
【单选题】( )由维修企业进行,以清洁、紧固、润滑为中心内容。
A.
常维护
B.
一级维护
C.
二级维护
D.
三级维护
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