晶体三极管的β、ICBO、UBE都是温度的函数,当温度升高时,β和ICBO(),而UBE()
单选题class Super { public int i = 0; public Super(String text) { i = 1; } } public class Sub extends Super { public Sub(String text) { i = 2; } public static void main(String args[]) { Sub sub = new Sub(“Hello”); System.out.println(sub.i); } } What is the result?()A0B1C2DCompilation fails.
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单选题永续盘存法公式为()A Kt+1=It-(1-δ)KtB Kt+1=It+(1-δ)KtC Kt+1=It+(1+δ)KtD Kt+1=It-(1+δ)Kt
单选题AI2=I3BI2=4I3CI2=2I3DI3=4I2
单选题class super ( public int I = 0; public super (string text) ( I = 1 ) ) public class sub extends super ( public sub (string text) ( i= 2 ) public static void main (straing args) ( sub sub = new sub (“Hello”); system.out. PrintIn(sub.i); ) ) What is the result?()ACompilation will fail.BCompilation will succeed and the program will print “0”CCompilation will succeed and the program will print “1”DCompilation will succeed and the program will print “2”
多选题标准砝码的质量为m,测量得到的最佳估计值为100.02147g,合成标准不确定uc(ms) 为0.35mg,取包含因子k=2,以下表示的测量结果中 ( ) 是正确的。Ams=100.02147g;U=0.70mg,k=2Bms=(100.02147±0.00070)g;k=2Cms=100.02147g;uc(ms)=0.35mg,k=1Dms=100.02147g;uc(ms)=0.35mg
单选题正态分布时,算术平均数、中位数、众数的关系为()A m0<me<(xB m0=me=(xC m0>me>(xD me<m0<(x
多选题在过程控制中,若TL=-3,Tu=3,u=1,σ=1,则( )。ACP=1 BCP=2/3 CCPk=1 DCPk=2/3