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【判断题】
透视投影属于中心投影，常用作建筑效果图。A.
正确
B.
错误
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】'But we stuck with it' in the third paragraph means______.
A.
they felt discouraged
B.
they carried on with it
C.
they failed in their attempt
D.
they made some progress
【单选题】We can learn from Paragraph Six and Paragraph Seven that______.
A.
keeping the parks open can benefit the economy better
B.
drivers should bear the responsibility of helping the parks
C.
the problem of the parks is far from being thoroughly solved
D.
the governor is likely to accept the move this time
【简答题】可编程并行接口8255A有几个数据传输通道?共有几种工作方式?控制字有几个? 可编程计数器/定时器8253有几个计数通道?共有几种工作方式?
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