国际上,指导项目管理工作的纲领性文件是( )。
A.建设项目规划 B.建设项目管理规划C.建设项目组织规划 D.建设项目控制规划
参考答案:B
On hearing the news that they had won the match, the students shouted in___________ voices.
A.exciting, exciting
B.excited, excited
C.excited, exciting
D.exciting, excited
可控硅的伏安特性即:电压一电流特性。()