判断题

滤波法实现SSB的技术难点是边带滤波器的制作。
正确
错误

答案：正确

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单项选择题

A、正确
B、错误

The cut-off test, which starts with the bookkeeping, is designed primarily to prevent the underestimation of the principal operating income (authenticity). ( )

答案：错误