Writing brushes, Chinese inks, rice paper and ink slabs are the basic tools of calligraphy.
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The body of gu qin is made of wood and the strings are made of silk.
A. 对
B. 错
频率调节范围为20~200Hz的RC正弦波振荡器,电容C = 0.27μF,如果用双联可变电阻来调节振荡频率,求可变电阻器的电阻值的变化范围。
1.在Excel2010中,工作簿一般是由()组成
A. 单元格
B. 文字
C. 工作表
D. 单元格全区域