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【多选题】
在使用、维护计算机时,应当注意:( )
A.
在硬盘灯亮的时候不要切断电源
B.
不要让硬盘受到强烈的冲击、碰撞
C.
定期用酒精清洗
D.
如果染上病毒，应及时运用高温消毒
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【单选题】class Animal{ Animal getOne（）{return new Animal（）；}}   class Dog extends Animal{   //insert code here   }   class AnimalTest{   public static void main（String[] args）{   Animal[] animal={ new Animal（）...
A.
3a行或3b行
B.
既非3a，也非3b
C.
3a行
D.
3b行
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【单选题】根据内容回答题. Musical Chairs Do you know how to play a game called Musical Chairs" ? It is easy to play and most people enjoy it. All you need are some chairs, some people and some way of making music. You...
A.
nine chairs
B.
ten chairs
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eleven chairs
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one chair
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【单选题】合同法所称合同是平等主体的自然人、法人、其他组织之间()的协议。
A.
设立
B.
变更
C.
终止民事权利义务关系
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设立、变更、终止民事权利义务关系
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【单选题】The first performance of the musical play “The Sound of Music” aroused ____in audience.
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affection
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appreciation
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enthusiasm
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influence
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【判断题】不同性质的金属材料可以采用点焊焊在一起。( )
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正确
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错误
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【单选题】H7N9 is a new kind of .
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disease
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medicine
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【简答题】Do you know how to play a called “Musical Chairs”？It is easy to play and most people enjoy it. All you need are some chairs, some people and some way of music. You may use a piano or any o...
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【简答题】阅读理解。 Do you know how to play a called 'Musical Chairs'? It is easy to play and most people enjoy it. All you need are some chairs, some people and some way of music. You may use a piano o...
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【简答题】Learning to play a musical instrument can change your brain, with a US review finding musical training can lead to improved speech and foreign language skills. Although it was suggested in the past th...
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【简答题】交流调压是指把不可调的交流电压变换成()可调的交流电源。
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【单选题】class Animal{ Animal getOne（）{return new Animal（）；}}   class Dog extends Animal{   //insert code here   }   class AnimalTest{   public static void main（String[] args）{   Animal[] animal={ new Animal（）...
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查看完整题目与答案
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查看完整题目与答案
【简答题】Learning to play a musical instrument can change your brain, with a US review finding musical training can lead to improved speech and foreign language skills. Although it was suggested in the past th...
查看完整题目与答案
【简答题】交流调压是指把不可调的交流电压变换成()可调的交流电源。
查看完整题目与答案