下列不属于旧机电产品的是 ( )
A.旧钢轨
B.旧打印机
C.旧电饭锅
D.旧车船
参考答案:A
Children under sixteen are not permitted to see such kind of films as ________ bad for their mental
development.[ ]
A. was
B. were
C. is
D. are
KTC和SQ3X系列切丝机排链传动链轮、链条磨损,会造成排链运动速度过慢,进而使烟饼推进速度不稳定,导致切丝宽度不均匀。