带传动中,当机器发生过载时,()可防止其它零件因过载而损坏,起到安全保护作用。
A.带断
B.自动停车
C.带在轮上打滑
D.电机供电路的熔断会熔断
参考答案:C
What caused the accident _____ on the road. [ ]
a. were stone
b. were stones
c. was stone
d. was stones
波埃休斯