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【简答题】
先化简,再求值: (1)(x﹣5y)(﹣x﹣5y)﹣(﹣x+5y) 2 ,其中x=﹣1,y=0.5;(2) ,其中x=2,y=﹣3.
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举一反三
【简答题】Conclude the main idea of each part in Text 1. What's the main idea of part 1(para.1-para.2)? What's the main idea of part 2(para.3-para.7)? What's the main idea of part 3(para.8)?
【单选题】The text is d i vided into 3 parts, Part I (Para. 1), Part II (Para 2-8), Part III (Para 9-11). What is the main idea of Part II?
A.
A brief introduction to Thomas Jefferson
B.
His talents in many fields and his contribution to US
C.
Some ideas and principles given by Thomas Jefferson.
【单选题】某塑料厂要将原生产板材的挤出机组改为生产管材,设备应作的调整是( )
A.
更换挤出主机和机头,保留辅机
B.
更换机头,保留挤出主机和辅机
C.
挤出主机、机头和辅机均应更换
D.
更换机头和辅机,保留挤出主机
【简答题】The text is d i vided into 3 parts, Part I (Para. 1), Part II (Para 2-8), Part III (Para 9-11). What is the main idea of Part III?A. A brief introduction to Thomas Jefferson. B. His talents in many fi...
【单选题】The text is divided into 3 parts, Part I (Para. 1), Part II (Para 2-8), Part III (Para 9-11). What is the main idea of Part I?
A.
A brief introduction to Thomas Jefferson.
B.
Some ideas and principles given by Thomas Jefferson.
C.
His talents in many fields and his contribution to US
【判断题】The text is divided into 3 parts, Part I (Para. 1), Part II (Para 2-8), Part III (Para 9-11).
A.
正确
B.
错误
【单选题】应用 Photoshop 中的各种修复工具进行人物皮肤的修复之后,可以执行【滤镜】 / 【杂色】 / 【添加杂色】命令,在图中增加少量的杂色点,这样做的目的是( )。
A.
使人物肤色稍微暗一些,以免过亮
B.
为图片增加真实的胶片颗粒效果,同时利用杂色掩饰修复痕迹
C.
添加杂色后可以使皮肤稍微模糊化,以取得更加真实的效果
D.
增加整幅图像的对比度
【单选题】珊瑚礁是_____性物质,适宜饲养海水动物的水族箱。
A.
B.
C.
【简答题】Part 3: Para 8-11
【单选题】mysqli_connect()与@mysqli_connect()的区别是
A.
@mysqli_connect()不会忽略错误,将错误显示到客户端
B.
无区别
C.
mysqli_connect()不会忽略错误,将错误显示到客户端
D.
功能不同的两个函数
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