在三极管输出特性曲线中，当Ib=0时 ，Ic等于（）。A、IcmB、UcboC、IceoD、Ie
在三极管输出特性曲线中，当Ib=0时 ，Ic等于（）。
- A、Icm
- B、Ucbo
- C、Iceo
- D、Ie
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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？（）A 0B 1C 2D Compilation fails.
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？（）A Compilation will fail.B Compilation will succeed and the program will print “0”C Compilation will succeed and the program will print “1”D Compilation will succeed and the program will print “2”