扼流变压器牵引线圈和信号线圈的变比是()
参考答案:1:3
Mr. Smith, _____ of the _____ speech, started to read a novel
A.tired; boring
B.tiring; bored
C.tired; bored
D.tiring; boring
The couple are trying to ________ a few hundred dollars every month for their son's education. [ ]
A. put away
B. put down
C. put aside
D. put back