为了防止产生偏差,顶管时应经常测量、及时校正,高程用()测量,中心线用经纬仪测量。
A.水平尺
B.水准仪
C.线坠
D.直尺
参考答案:C
假定在工程文件中有一个标准模块,其中定义了如下记录类型: Type BooksName As String*10TelNum As String*20 End Type 要求当执行事件过程Command1_Click时,在顺序文件Person. txt中写入一条记录。下列能够完成该操作的事件过程是______。
A.Private Sub Command1_Click() Dim B As Books Open"c:\Perso txt" For Output As #1Name=InputBox("输入姓名")TelNum=InputBox("输入电话号码") Write #1, Name, TelNum Close #1 End Sub
B.Private Sub Command1_Click() Dim B As Books Open"c:\Person txt" For Output As #1Name=InputBox("输入姓名")TelNum=InputBox("输入电话导码") Print #1, Name, TelNum Close #1 End Sub
C.Private Sub Command1_Click() Dim B As Books Open"c:\Perso txt" For Output As #1 Name=InputBox("输入姓名") TelNum=InputBox("输入电话号码") Print #1, B Close #1 End Sub
D.Private Sub Command1_Click() Dim B As Books Open "c:\Person txt" For Output As #1 Name=InputBox("输入姓名") TelNum=InputBox("输入电话号码") Print #1, B Name, TelNum Close #1 End Sub
常用的汽液相平衡关系为()。