题目内容
用74LS161设计一同步12进制计数器，采用同步置零的方法， 应该在 状态置零
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check the following words and expressions and try to match them with their Chinese equivalents.
什么是文言文？
primary buying motives cause a customer to select one type, kind, or class of merchandise or service rather than another.
The primary reason for the purchase of the air conditioner is to remove pollen from the air...
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