测定锅水氯离子时,往往需稀释后测定,这是为了()。A、节约硝酸银 B、避免AG吸附氯 发布时间:2020-01-23 14:36 │ 来源:www.tikuol.com 题型:单项选择题 问题: 测定锅水氯离子时,往往需稀释后测定,这是为了()。A、节约硝酸银B、避免AG吸附氯离子C、提高测定精度D、更方便操作
题型:单项选择题 We only had $100 and that was _____ to buy a new computer.A. nowhere near enough B. near enough nowhere C. enough near nowhere D. near nowhere enough 查看答案
题型:单项选择题 在窗体上有个命令按钮,然后编写如下事件过程: m=InputBox("enter the first integer") n=InputBox("enter the second integer") Print n+m 程序运行后,单击命令按钮,先后在两个输入框中分别输入“1”和“5”,则输出结果为()。A.30B.31C.32D.33 查看答案