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【判断题】
某系统微分方程为 ,则该系统是线性的。A.
正确
B.
错误
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【单选题】If the operational amplifier is to operate in its linear range, () must exist between the inverting and the noninverting inputs.
A.
a very small current difference
B.
a very small voltage difference
C.
a very large voltage difference
D.
a very large current difference
【单选题】According to Figure 2, which of the following statements best describes the relative amplitudes of the first p-waves to arrive at the seismograph and the first s-waves to arrive at the seismograph? Th...
A.
smaller than the amplitude of the first s-waves to arrive at the seismograph.
B.
larger than the amplitude of the first s-waves to arrive at the seismograph.
C.
nonzero, and the same as the amplitude of the first s-waves to arrive at the seismograph.
D.
zero, as is the amplitude of the first s-waves to arrive at the seismograph.
【单选题】下面IF函数的格式正确的是()
A.
=IF(SUM(B5)<60,"补考","")< /div>
B.
=IF(SUM(B5)<60,补考,"")< /div>
【简答题】if函数的格式( )。
【简答题】生产过程综合分析是按照物流路线，分析加工对象从投入到成品产出的生产活动全过程，从总体上掌握工艺过程的全貌。下列选项中不属于生产过程分析的具体方法是（ ）。
【单选题】Using this scope to ______ your view can make it easier to see the distant targets.
A.
amplify
B.
extend
C.
magnify
D.
expand
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