[名词解释] 次要元素(minor element)
[名词解释] 相容元素(compatible element)
[名词解释] 分散元素(dispersed element)
[名词解释] 稀有元素(rare element)
[名词解释] 微量元素(trace element, microelement)
[名词解释] 不相容元素(incompatible element)
[名词解释] 微量元素(trace element或microelement)
[单选题] 在XML中,元素book 的声明语句如下:<!ELEMENT book (title,price+,author?,borrow*)>该声明语句表明,元素book中子元素 (62) 至少出现一次。A. title B. price C. author D. borrow
[名词解释] 辅助色素(accessory pigments)
[单选题]In ______, the only element that can be deleted or removed is the one that was inserted most recently.A.a lineB.a queueC.an arrayD.a stackA.B.C.D.