【单选题】在自动演奏简易电子琴电路中,PlaySound()函数的作用是播放指定的音调,其代码如下: void PlaySound() { unsigned short i = 0; if((LittleStar[psong] >> 4) == 0) TR0 = 0; else { TH0 = NoteCode[(LittleStar[psong] >> 4) - 1] >> 8; TL0 = NoteCo...
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【简答题】Trade terms, also called price terms or delivery terms, are an important component of a unit price in international trade, standing for specific obligations of the buyer and the seller. Every commerci...
【单选题】Trade terms used in international trade are defined by ______.