如图，工业革命史人类史上第一次科技革命，它是用机器生产系统取代手工劳动的过程。工业革命开始于下列哪个图示的发明

设在工程中定义了如下类型：
Type stutype
ino As Integer
strname As String*20
strsex As String* 1
smark As Single End Type
在窗体上正确使用这个类型的是下列哪个操作( )。

A．Sub Commandl_Click0
Dim student As Stutype
With student
.ino = 12
. strname = smith
.strsex =
.smark = 89
End With
End Sub

B．Sub Commandl_Click0
Dim student As Stutype
With student
.ino = 12
.strname = "smith"
.strscx = "男"
.smark = 89
End With
End Sub

C．Sub Commandl_Click0
Dim student As Stutype
With Stutype
ino = 12
.strname = "smith"
.strsex = "男"
.smark = 89
End With
End Sub

D．Sub Command1 _Click()
Dim student As Stutype
With student
.ino = 12
.strname = "smith"
.strsex = "男"
.smark = 89
End student
End Sub