举一反三
- A 2-input gate produces a HIGH output only when the inputs agree. This type of gate is a(n) A: OR gate B: AND gate C: NOR gate D: XNOR gate
- For the XOR gate,the output is TRUE if an odd number of inputs are TRUE.
- The output of a OR gate is LOW only when all its inputs are LOW
- The output of a OR gate is LOW only when all its inputs are LOW A: 正确 B: 错误
- 题目：将一个正整数分解质因数。例如：输入90，打印出90=2*3*3*5. n = int(input("input number:")) print ("n = %d" % n) for i in range(2,n + 1): while __________ if n % i == 0: print(str(i)) print("*") n = n / i else: break print( "%d" % n)
内容
- 0
以下程序不正确的是 ( ) A: n=input('n=')switch rem(n,3)case 0; A=3*ncase 2; A=2*ncase 1; A=n end B: n=input('n=')if rem(n,3)==0; A=3*n elseif rem(n,3)==2; A=2*n else A=n end end C: n=input('n=')if rem(n,3)==0; A=3*nelseif rem(n,3)==2; A=2*nelse A=n end D: n=input('n=')switch rem(n,3)case 0; A=3*ncase 2; A=2*notherwise; A=n end
- 1
以下程序不正确的是 A: n=input(‘n=‘)if rem(n,3)==0; A=3*nelseif rem(n,3)==2; A=2*n else A=nendend B: n=input(‘n=‘)if rem(n,3)==0; A=3*nelseif rem(n,3)==2; A=2*n else A=nend C: n=input(‘n=‘)switch rem(n,3)case 0; A=3*ncase 2; A=2*notherwise; A=nend D: n=input(‘n=‘)switch rem(n,3)case 0; A=3*ncase 2; A=2*ncase 1; A=nend
- 2
An AND gate can have only two inputs
- 3
For the AND gate,the output is TRUE only if all of the inputs are TRUE.
- 4
The AND gate output is HIGH only when all the inputs are LOW.