棒磨机稀油站过滤器设在冷却器之前,主要因为()。
参考答案:油在高温时粘度低,油通过能力强
don’t think Japan is a pleasant place for us Chinese students,for I in that country for ten years.
A.stayed
B.have been staying
C.was staying
D.have stayed
一般认为当眼外肌后退和缩短各1mm时,可矫正______的斜视度。