注塑设备开车时,喷嘴对空注射最易造成:()
A、磕碰伤
B、肢体被模具挤伤
C、触电
D、烫伤
参考答案:D
45. With the rapid growth of population, the city______ in all directions in the past five years.
A.has been spread
B.has spread
C. spread
D.had spread
古代普遍推行的教学组织形式是______。