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【单选题】
一阶电路的零状态响应是指( )。A.
电容电压 V或电感电压 ,且电路有外加激励作用。
B.
电容电流 V或电感电压 ,且电路无外加激励作用。
C.
电容电流 V或电感电流 ,且电路有外加激励作用。
D.
电容电压 V或电感电流 ,且电路有外加激励作用。
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举一反三
【简答题】增值税纳税人采取直接收款方式销售货物，不论货物是否发出，其增值税纳税义务发生时间均为收到销售款或者取得索取销售款凭据的当天。( )
【单选题】Part B (10 points) You are going to read a text about the situation of the blacks in America, followed by a list of examples and explanations. Choose the best example or explanation from the list for ...
A.
It has been estimated that there are more than 20 million Americans in this category, 10% of the population, including many millions of whites.
B.
Blacks are gaining in self-confidence. In more and more areas they are winning control of their communities, and their standard of living is going up faster than that of the poor whites. It is still a hard struggle. There is still prejudice and even some hatred, but in most walks of American life there are now more blacks than ever before.
C.
The era of blatant discrimination ended in the 1960s through the courageous actions of thousands of blacks participating in peaceful marches and sit-ins, to force Southern states to implement the Federal desegregation laws in schools and public accommodations. Down came the 'whites only' notices in bused, hotels, trains, restaurants, sporting s, restrooms and on park benches that once could be found everywhere throughout the South. Gone were the restrictions that pred blacks voting. Gone, too, were the hideous lynchings, which since the Civil War had caused the death of thousands of innocent blacks—hanged without trial by white mobs. However, even today, poor, uneducated lacks do not always receive the same degree of justice that the more affluent and better educated can expect.
D.
Many blacks chose to keep silent about their unfairness instead of resorting to violence. But their silence was also problem provoking: on the one hand, silence would build up a lot of complaints and hatred in their minds, thus resulting in a negative approach to lif
【单选题】7 在窗体上画一个文本框(其 Name 属性为 Text1 ),然后编写如下事件过程: Private Sub Form_Load() Text1.Text="" Text1.SetFocus For i=1 To 10 Sum=Sum+i Next i Text1.Text=Sum End Sub 上述程序的运行结果是 ______ 。
A.
、在文本框 Text1 中输出 55
B.
、在文本框 Text1 中输出 0
C.
、出错
D.
、在文本框 Text1 中输出不定值
【单选题】下列控件属性赋值语句错误的是( )。
A.
Label1 = '欢迎'
B.
Text 1.Text = '欢迎'
C.
Text1 = '欢迎'
D.
Text = '欢迎'
【单选题】在窗体上画一个名称为 Text1 的文本框,然后编写以下事件过程: Private Sub Text1_KeyDown(KeyCode As Integer, Shift As Integer) If _________________ Then Text1.SelStart = 0 Text1.SelLength = Len(Text1.Text) End If End Sub 要求程序运行时 ...
A.
KeyCode = "A" And Shift = "Ctrl"
B.
KeyCode = 65 And Shift = 2
C.
Text1.KeyCode = 65 And Text1.Shift = 2
D.
Text1.KeyCode = "A" And Text1.Shift = "Ctrl"
【单选题】下列关于增值税纳税义务发生时间的表述，错误的是（ ）。
A.
采取直接收款方式销售货物，不论货物是否发出，均为收到销售款或者取得索取销售款凭据的当天
B.
采取托收承付和委托银行收款方式销售货物，为收到货物的当天
C.
销售应税劳务，为提供劳务同时收讫销售款或者取得索取销售款凭据的当天
D.
采取预收货款方式销售货物，为货物发出的当天
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