如果直接记录心内电图,要求心电图机的泄漏电流应小于() A.CF型 B.BF型 C. 发布时间:2017-02-27 03:51 │ 来源:www.tikuol.com 题型:单项选择题 问题: 如果直接记录心内电图,要求心电图机的泄漏电流应小于()A.CF型B.BF型C.B型D.100μAE.10μA
题型:单项选择题 16. ----It’s getting dark, but Mr. Johnson is still at his office. ----No surprise. Who else can _____ he does?A.do less work thanB.work as hardly as C.work as hard as D.be working hardly like 查看答案
题型:单项选择题 在窗体中添加一个名称为Command1的命令按钮,然后编写如下事件代码: Private Sub Command1_Click() a=75 If a>60 Thenk=1 ElseIf a>70 Thenk=2 ElseIf a>80 Thenk=3 ElseIf a>90 Thenk=4 Endlf MsgBox k End Sub 窗体打开运行后,单击命令按钮,则消息框的输出结果是( )。A.1 B.2 C.3 D.4 查看答案