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【单选题】
兹力可以使运动的带电粒子 ( )。
A.
改变带电粒子的速率
B.
改变带电粒子的动量
C.
对带电粒子做功
D.
增加带电粒子动能
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参考答案:
举一反三
【单选题】有一个长方体,宽和高都是a,长是宽与高之和,这个长方体的体积是(  )
A.
a+a×2
B.
2a 2
C.
2a 3
D.
4a
【单选题】The man insisted ______ a taxi for me even though I told him I lived nearby.
A.
find
B.
to find
C.
on finding
D.
in finding
【判断题】在螺杆压缩机高压差的级中应采用较大的相对长度。
A.
正确
B.
错误
【简答题】regret , assistant , complaint, look into , situation , compete turn a deaf ear to , instead , look forward to , cooperate , balance 7. They know the importance to keep the ________ of the team.
【简答题】regret , assistant , complaint, look into , situation , compete turn a deaf ear to , instead , look forward to , cooperate , balance 9. Our shop _______ sell goods from door to door.
【简答题】Here’s a quick reminder to all of you when you get stuck in a moment. Yesterday I skipped breakfast because I got up late. Because of the busy school work, I forgot my lunch. When I was finally thinki...
【简答题】(18分)钛被誉为“二十一世纪的金属”,用途广泛。按下图所示组成的产业链可以大大提高资源利用率并能减少环境污染。请回答下列问题: (1)已知中FeTiO 3 元素的化合价为+3,钛铁矿经氯化法得到四氯化钛的过程中________元素被氧化,每生产1. 9kgTiCl 4 消耗Cl 2 在标准状况下的体积为________L。 则金属Mg还原TiCl 4 制取金属Ti (s)的热化学方程式为____...
【简答题】regret , assistant , complaint, look into , situation , compete turn a deaf ear to , instead , look forward to , cooperate , balance 3. We are _________ seeing you this summer vacation.
【简答题】regret , assistant , complaint, look into , situation , compete turn a deaf ear to , instead , look forward to , cooperate , balance 10. We ________ that we cannot accept phone orders.
【单选题】-----Is it ______ that the volcano nearby will erupt these days? -----No, I don’t think so.
A.
probably
B.
likely
C.
possibly
D.
perhaps
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