紧固螺丝时,必须()扭紧。
A.尽可能
B.按规定的压力
C.按规定扭矩
D.一次性
参考答案:C
. Jenny hopes that Mr. Smith will suggest a good way to have her written English __________ in a short period.
A.improved
B.improving
C.to improve
D.improve
在窗体中添加一个名称为Command1的命令按钮,然后编写如下程序: Public x As Integer Private Sub(20mmand1_Click()x=10Call s1Call s2MsgBox x End Sub Private Sub s1()x=x+20 EndSub Prirate Sub s2()Dim x As Integerx=x+20 End Sub 窗体打开运行后,单击命令按钮,则消息框的输出结果为( )。
A) 10 B) 30 C) 40 D) 50