A signal s(t)=3cos(20pt) V is quantized by a uniform quantizer, the step size of the quantizer is 0.1V, then the minimal number of quantization level is Lmin=_______, the number of bits per sample is at least Rmin=_______, and the variance of the quantization error is _________V^2.

which of the following can be used to eliminate the determinate error A: conducting a blank test B: performing a comparative test C: calibrating the instrument D: increasing number of measurement

An error of commission is one where: A: A transaction has not been recorded. B: One side of a transaction has been recorded in the wrong class of account, such as non-current assets posted to inventory. C: An error has been made in posting a transaction. D: The digits in a number are recorded the wrong way round.

下列是全局变量的是（）。 A: @error B: @@error C: !error D: error（）

The following is not the geometric error of machining process system (). A: machining principle error B: geometric error of machine tool C: adjustment error D: tool manufacturing error

下列不属于VBA提供的On Error语句形式为()。 A: On Error Goto标号 B: On Error Then 标号 C: On Error Resume Next D: On Error Goto 0

The following is the machining principle error () . A: approximate profile error of forming tool B: spindle revolving error of machine tool spindle C: guide error of machine tool D: fixture error

以下程序的输出结果是:a =10b =1try:c=b//(b/a)print(except (IOError ,ZeroDivisionError):print( " calculation error" )else:print(" no error" )} A: calculation error B: no error C: 9.0 D: 9.0no error

VBA中不能进行错误处理的语句是（ ）。 A: On Error Got0标号 B: On Error Then标号 C: On Error Resume Next D: On Error Got0 0

VBA中不能进行错误处理的语句是( )。 A: On Error Goto标号 B: On Error Then标号 C: On Error Resume Next D: On Error Goto 0