-What do you think of the standard of the new curriculum（课程）?  

-It is certain to have a great__________ upon the future of both teachers and students.  [ ]

A. result        

B. effect        

C. effort        

D. affect

设备线夹压接前应测量压接管管孔的深度，并在导线上划印，保证导线插入长度与压接管深度一致。