有如下程序: Private Sub Command1 Click() Dim a As Single Dim b As Single a=5:b=4

题目

有如下程序: Private Sub Command1 Click() Dim a As Single Dim b As Single a=5:b=4 Call S(a,B)End Sub Sub S(x As Single,y As Single) t=x x=t\y y=t Mod y End Sub 在调用运行上述程序后,a和b的值分别为

A.0 0

B.1 1

C.2 2

D.1 2

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相似问题和答案

第1题:

You are developing a Windows Communication Foundation (WCF) service.One of the service operations contains the following code.private static int counter = 0;[OperationContract]public void IncrementCount(){ counter++;}You need to set a service behavior that prevents two or more threads from incrementing the counter variable at the same time.Which code segment should you use to set the service behavior?()

A. [ServiceBehavior(InstanceContextMode = InstanceContextMode.Single, ConcurrencyMode = ConcurrencyMode.Single)]

B. [ServiceBehavior(InstanceContextMode = InstanceContextMode.PerSession, ConcurrencyMode = ConcurrencyMode.Single)]

C. [ServiceBehavior(InstanceContextMode = InstanceContextMode.Single, ConcurrencyMode = ConcurrencyMode.Multiple)]

D. [ServiceBehavior(InstanceContextMode = InstanceContextMode.PerCall, ConcurrencyMode = ConcurrencyMode.Reentrant)]


参考答案:A

第2题:

在标准模块中用:Dim或Private关键字定义的变量是______变量,它们只能在程序的模块中使用。


正确答案:局部标准
局部标准

第3题:

( 22 )有如下过程代码:

Sub var_dim()

Static numa As Integer

Dim numb As Integer

numa=numa+2

numb=numb+1

print numa;numb

End Sub

连续 3 次调用 var_dim 过程,第 3 次调用时的输出是

A ) 2 1

B ) 2 3

C ) 6 1

D ) 6 3


正确答案:C

第4题:

半速率小区中,某个呼叫“优选半速率信道”,则下列信道的分配顺序错误的有()

A.全速率—Couple半速率—Single半速率

B.全速率—Single半速率—Couple半速率

C.Couple半速率—Single半速率—全速率

D.Couple半速率—全速率—Single半速率

E.Single半速率—全速率—Couple半速率


参考答案:A, B, C, D, E

第5题:

在窗体上画一个命令按钮,名称为Commandl,然后编写如下事件过程: Private Sub Commandl_Click() Dim() a=Array(”机床”,”车床”,”钻床”,”轴承”)Printa(2)EndSub程序运行后,如果单击命令按钮,则在窗体上显示的内容是( )。

A.机床

B.车床

C.钻床

D.轴承


正确答案:C
暂无解析,请参考用户分享笔记

第6题:

You are developing a Windows Communication Foundation (WCF) service that does not operate on a duplex channel.You find that operations do not start until all previous operations have finished. The service hosting code contains the following lines.var service = new WarehouseService(); var host = new ServiceHost(service);You need to ensure that new operations do not wait for previous operations to finish.Which attribute should you use to decorate the service?()

A. [ServiceBehavior(InstanceContextMode=InstanceContextMode.Single, ConcurrencyMode=ConcurrencyMode.Multiple)]

B. [CallbackBehavior(ConcurrencyMode=ConcurrencyMode.Multiple)]

C. [ServiceBehavior(InstanceContextMode=InstanceContextMode.Single, ConcurrencyMode=ConcurrencyMode.Single)]

D. [ServiceBehavior(InstanceContextMode=InstanceContextMode.Single, ConcurrencyMode=ConcurrencyMode.Reentrant)]


参考答案:B

第7题:

有如下过程代码: Sub var_dim( ) static numa As Integer Dim numb As Integer numa=numa+2. numb=numb+1 print numa;mub End Sub 连续3次调剧var_dim过程,第3次调用时的输出是( )。

A.2 1

B.2 3

C.6 1

D.6 3


正确答案:C
C。【解析】Static是将变量声明为静态变量,每次调用值会取上次调用后的值。而numb是局部变量,每次会重新初妁化,所以应选C选项。

第8题:

在窗体模块的声明段中用Public定义的变量可以在 ________ 模块中使用,而用Dim或Private关键字定义的变量可以在 _______ 模块中使用。


正确答案:整个程序的所有模块 定义该变量的窗体
整个程序的所有模块 定义该变量的窗体

第9题:

模块级变量的声明既可以用关键字Private,也可以用关键字Dim。( )

此题为判断题(对,错)。


正确答案:正确

第10题:

将数据库导入R语言后,可用()显示数据库结构,用()查看数据库行列数,用()查看每个变量的基本统计值。

A.str(data) summary(data) dim(data)

B.str(data) dim(data) summary(data)

C.dim(data) summary(data) str(data)

D.summary(data) dim(data) str(data)


str(data) dim(data) summary(data)