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1你需要创建一个清除队列(Queue )q 的方法。你应该使用下面那段代码?
A. foreach (object e in q) {q.Dequeue();}
B. foreach (object e in q) {Enqueue(null);}
C. q.Clear();
D. q.Dequeue();
答案: C
2请使用下面的条件确定一个类型:
1) 是一个数字。
2) 不大于 65,535
请问,是哪一个类型?
A. System.UInt16
B. int
C. System.String
D. System.IntPtr
答案: A
3你需要写一个完成如下任务的代码段:
1) 查找所有暂停的服务
2) 把服务的显示名称增加到集合中
请问,你应该使用那个代码段?
A. Dim searcher As ManagementObjectSearcher = _New ManagementObjectSearcher( _
"Select * from Win32_Service where State = ’Paused’")
For Each svc As
ManagementObject In searcher.Get()
Collection1.Add(svc("DisplayName"))
Next
B. Dim searcher As ManagementObjectSearcher = _New ManagementObjectSearcher ( _
"Select * from Win32_Service", "State = ’Paused’")
For Each svc As ManagementObject In searcher.Get()
Collection1.Add(svc("DisplayName"))
Next
C. Dim searcher As ManagementObjectSearcher = _ New ManagementObjectSearcher( _
"Select * from Win32_Service")
For Each svc As ManagementObject In searcher.Get()
If svc("State").ToString() = "’Paused’" Then
Collection1.Add(svc("DisplayName"))
End If
Next
D. Dim searcher As New ManagementObjectSearcher()searcher.Scope = New
ManagementScope("Win32_Service")
For Each svc As ManagementObject In searcher.Get()
If svc("State").ToString() = "Paused" Then
Collection1.Add(svc("DisplayName"))
End If
Next
答案: A
4.你需要创建一个能够和 COM 进行互操作的类。为此,你需要保证 COM 应用能够创建这个类的实例并且能够调用 GetAddress 方法。你应该使用那个代码段定义你的类?
A. public class Customer {
string addressString;
public Customer(string address) { addressString = address; }
public string GetAddress() { return addressString; }}
B. public class Customer {
static string addressString;
public Customer() { }
public static string GetAddress() { return addressString; }}
C. public class Customer {
string addressString;
public Customer() { }
public string GetAddress() { return addressString; }}
D. public class Customer {
string addressString;
public Customer() { }
internal string GetAddress() { return addressString; }}
答案: C
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