From the passage we may come to the conclusion that ______.
A. joining big companies are more beneficial to graduates
B. smaller companies are the best choice for graduates
C. graduates should listen to their parents' opinions when choosing a job
D. both big companies and small ones have their own advantages and disadvantages
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People have different opinions about ______.
A. why the concentration of gas is rising steadily
B. to what degree the greenhouse effect can affect us
C. whether CO2 has anything to do with the greenhouse effect
D. what measures should be taken to lower the carbon dioxide levels
下列程序的执行结果是 public class Testgg public static void main(String args[]) float t=9.0f； int q=5； System.out.println((t++)*(- -q))；
A. 40
B. 36
C. 36.0
D. 40．0
People have divided opinions about ______.
A. the benefits a big company provides to graduates
B. the advantages a small company offers to graduates
C. whether graduates should work for a large or a small company
D. whether graduates can gain different experience
( )属于钨极氩弧焊焊机电源参数的调试内容。
A. 小电流段电弧的稳定性
B. 脉冲参数
C. 引弧、焊接、断电程序
D. 提前送气和滞后停气程序
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