引起火灾报警的检修作业在作业前必须将集中控制盘打至（）状态。
A.自动
B.就地
C.远控
D.手动
参考答案：D
Jade is the highest award in Chinese culture and medals are the most important prize in Olympics,
so medals with jade is the perfect _________ to present the Olympics in Beijing. [ ]
A. connection
B. cooperation
C. combination
D. composition
成人股骨颈干角的平均值，在男性为（）
A.125°
B.127°
C.130°
D.132°
E.135°
