单选题Which of the following is the standard aspect ratio for HDTV？（）A2.35：1B4：3C1.33：1D1.78：1
单选题
Which of the following is the standard aspect ratio for HDTV？（）
A
2.35：1
B
4：3
C
1.33：1
D
1.78：1
参考解析
解析：
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