• 2021-04-14
    【单选题】在文本框Text1中输入数字12,Text2中输入数字34,执行以下语句,只有_____可使文本框Text3中显示46;
    A. Text3. Text=Val(Text1. Text)+Val(Text2.Text) B. Text3. Text=Text1. Text+Text2.Text C. Text3. Text=Text1. Text & Text2. Text D. Text3. Text=Val(Text1. Text) & Val(Text2.Text)
  • Text3. Text=Val(Text1. Text)+Val(Text2.Text)

    举一反三

    内容

    • 0

      There are _____ texts. They are Text A _________________, Text B _________________, Text C _________________, Text D _________________.

    • 1

      There five texts in Chapter 6. Text A _________________________; Text B _______________________; Text C _______________________; Text C _______________________; Text E _______________________;

    • 2

      已知齐次方程$(x-1){{y}^{''}}-x{{y}^{'}}+y=0$的通解为$Y={{C}_{1}}x+{{C}_{2}}{{e}^{x}}$,则方程$(x-1){{y}^{''}}-x{{y}^{'}}+y={{(x-1)}^{2}}$的通解是( ) A: ${{\text{C}}_{1}}x+{{\text{C}}_{2}}{{e}^{x}}-({{x}^{2}}+1)$ B: ${{\text{C}}_{1}}x+{{\text{C}}_{2}}{{e}^{x}}-({{x}^{3}}+1)$ C: ${{\text{C}}_{1}}x+{{\text{C}}_{2}}{{e}^{x}}-{{x}^{2}}$ D: ${{\text{C}}_{1}}x+{{\text{C}}_{2}}{{e}^{x}}-{{x}^{2}}+1$

    • 3

      以下哪段代码不能正确创建函数show()?() A: functionshow(text){alert(text);} B: varshowFun=functionshow(text){alert(text);} C: varshowFun=function(text){alert(text);} D: varshowFun=newfunction("text","alert(text)"};

    • 4

      The text can be classified into three types: ______, ______ and ______. A: informative text B: functional text C: expressive text D: operative text