皮皮学,免费搜题
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【简答题】
Fill in each blank with an appropriate phrase given below, changing the form if necessary. in addition to chat with originate in indulge in view... as pass through make friends with bring down in fashion in return for 1. ____ French, he has to study Japanese. 2. Tom attended school a week ago, but he found it hard to ____ other students. 3. These people were ______ their most dangerous rivals. 4. Miniskirts were ______ in the late sixties. 5. It’s pleasant to _______ good friends every day. 6. Could you ______ the gate again please? 7. I’d like to give him some present ________ his kindness. 8. Financial policies ________ stock/markets during the last three years. 9. The price of petrol was _____ recently. 10. The boy _____ playing computer games recently.
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【简答题】为什么生物体中存在5%左右的负超螺旋,有什么生物学意义呢
【多选题】根据叉车的用途,可以将叉车分类为()类型
A.
平稳重式叉车
B.
前移式叉车
C.
插腿式叉车
D.
侧叉式叉车
E.
低起升插腿式
【单选题】数据库是()的集合,它具有统一的结构格式并存放于统一的存储介质,可被各个应用程序所共享
A.
视图
B.
消息
C.
数据
D.
关系
【判断题】亚里士多德是柏拉图的学生,是亚历山大大帝的老师。()
A.
正确
B.
错误
【判断题】亚里士多德是柏拉图的老师。()
A.
正确
B.
错误
【多选题】根据叉车的用途,可以将叉车分类为( )类型。
A.
平衡重式叉车
B.
前移式叉车
C.
插腿式叉车
D.
侧叉式叉车
E.
低起升插腿式
【单选题】已知X B,正确表示它们之间关系的式子是() 。
A.
Sgn(Y−X)−Sgn(A−B)<0< /div>
B.
Sgn(X−Y)−Sgn(A−B)= −2
C.
Sgn(X−Y)−Sgn(A−B)=0
D.
Sgn(X−Y)−Sgn(A−B)= −1
【判断题】实际中心距大于标准中心距时,啮合角 α ′ 大于分度圆上压力角 α 。
A.
正确
B.
错误
【单选题】Alice is re a ding ( A ) a storybook / (B) a picture book .
A.
a storybook
B.
a picture book .
【判断题】窗体可以同时给多个数据表输入数据。
A.
正确
B.
错误
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