若需要对信号机电源调压时,夜间调到()伏白天调到()伏。
参考答案:180、220
“以是为率”中的“率”意思是()
A.率先
B.率领
C.轻率
D.比例
E.效率
Programmers test a program by running it to ensure that the (74) are correct and that the program produces the desired outcome. If errors do occur, the programmer must make the appropriate change and recheck the program until it produces the correct results. This (75) is called testing and debugging.
A.procedure
B.program
C.programmer
D.process