砷化氢–硝酸银分光光度法测定海水中砷时,DMF脱脂棉可重复使用数次,当DMF棉明显变 发布时间:2017-11-06 00:25 │ 来源:www.tikuol.com 题型:单项选择题 问题: 砷化氢–硝酸银分光光度法测定海水中砷时,DMF脱脂棉可重复使用数次,当DMF棉明显变()色时应调换。A、黄B、蓝C、红
题型:单项选择题 对窗体编写如下代码,当程序运行后,按回车键,输出结果为 ______。Option Base 1Private Sub Form KeyPress(KeyAscii As Integer) a = Array(237,126,87,48,498) m1 = all) m2= 1 If KeyAscii = 13 Then For i = 2 To 5If a(i)>m1 Then m1 = a(j) m2= iEnd IfNext i End IfPrint m1Print m2End SubA.48 4B.237 1C.498 5D.498 4 查看答案