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【单选题】
PubMed数据库提供关键词的自动匹配功能，能够将关键词分别与MeSH转换表、刊名转换表、作者索引、(
A.
化学物质索引
B.
地名索引
C.
短语表
D.
单位索引
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【多选题】下列对关键词的叙述正确的是()
A.
关键词反映论文主要内容的核心概念
B.
关键词可从标题中或有代表性的词语中选取
C.
几个关键词之间不用标点符号，用空格隔开
D.
中文关键词置于摘要之后，正文之前;英文关键词置于英文摘要之后
【单选题】有如下事件过程：Private Sub Form_Load() Show Dim Arr() As Variant Arr = Array(1, 3, 5, 7, 9, 11, 13, 15) Call converse(Arr) For i = 0 To 7 Print arr(i); Next iEnd Sub 以上程序的功能是，通过调用Converse过程，将数组Arr中的元素逆序存放并输出...
A.
Private Sub converse(dim a() as Variant ) Dim T For i = LBound(A) To UBound(A) T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
B.
Private Sub converse(dim a() as Variant) Dim T Dim J As Integer J = (LBound(A) + UBound(A)) / 2 For i = LBound(A) To J T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
C.
Private Sub converse(a() As Variant) Dim T For i = LBound(A) To UBound(A) T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub
D.
Private Sub converse(a() As Variant) Dim T Dim J As Integer J = Int((LBound(A) + UBound(A)) / 2) For i = LBound(A) To J T = a(i) a(i) = a(UBound(A) - i) a(UBound(A) - i) = T Next i End Sub