假定有以下两个过程: Private Sub PPP(a As Single, b As Single) a=a+b Print a, b b=a+b Print a, b End Sub Private Sub Form_Activate0 x=18 Call PPP((x), (x)) Print x End Sub 则下列说法中不正确的是( )。A.形参是a和b,两个实参(x)和(x)允许重名B.形参是a和b,实参(x)表示传值调用C.形参是a和b,实参(x)表示是非传址调用D.形参是a和b,两个实参(x)和(x)不允许重名

假定有以下两个过程: Private Sub PPP(a As Single, b As Single) a=a+b Print a, b b=a+b Print a, b End Sub Private Sub Form_Activate0 x=18 Call PPP((x), (x)) Print x End Sub 则下列说法中不正确的是( )。

A.形参是a和b,两个实参(x)和(x)允许重名

B.形参是a和b,实参(x)表示传值调用

C.形参是a和b,实参(x)表示是非传址调用

D.形参是a和b,两个实参(x)和(x)不允许重名


相关考题:

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)]

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)]

以下哪个不是Activity启动时的正确标志?() A.FLAG_ACTIVITY_CLEAR_TOPB.FLAG_ACTIVITY_SINGLE_TASKC.FLAG_ACTIVITY_SINGLE_TOPD.FLAG_ACTIVITY_NEW_TASK

[A]unique [B]single [C]unitary [D]only

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

因为Single类型的变量可存储数值的范围大于Long类型的变量,所以Single类型占用内存大于Long类型。A对B错

5、关于赋值语句,以下选项中描述错误的是()A.设 a = 10;b = 20,执行a,b = a,a + b print(a,b)和a = b b = a + bprint(a,b)之后,得到同样的输出结果:10 30###SXB###B.在 Python 语言中,“=”表示赋值,即将“=”右侧的计算结果赋值给左侧变量,包含“=”的语句称为赋值语句###SXB###C.设 x = "alice";y = "kate",执行x,y = y,x可以实现变量 x 和 y 值的互换###SXB###D.在 Python 语言中,有一种赋值语句,可以同时给多个变量赋值

7、下面代码的输出结果是()。 a = "ac" b = "bd" c = a + b print(c)A.abcdB.cabcC.cD.acbd

17、下面代码的输出结果是()。 a = "ac" b = "bd" c = a + b print(c)A.abcdB.bdacC.acbdD.dbac

10、关于赋值语句,以下选项中描述错误的是‪‪‪‪‪‪‪‪‪‪‪‪‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‪‪‪‪‪‪‪‫A.设 a = 10;b = 20,执行 a,b = a,a + b print(a,b) 和 a = b b = a + b print(a,b) 之后,得到同样的输出结果:10 30#B.在 Python 语言中,有一种赋值语句,可以同时给多个变量赋值#C.在 Python 语言中,“=”表示赋值,即将“=”右侧的计算结果赋值给左侧变量,包含“=”的语句称为赋值语句#D.设 x = "alice";y = "kate",执行 x,y = y,x 可以实现变量 x 和 y 值的互换