25. 下列有關淨油機錐形分離片及其間距的敘述,何者不正確?(A) 分離片數愈多,分離效果愈好(B) 分離片一般多取0.35~0.4 mm左右厚度(C) 分離片之間的距離愈大,分離效果愈好(D) 碟式
28. The ______ fire extinguisher is suitable to be organized as a central fire extinguishingsystem.(
14. If the critical RPM that may cause serious vibrations is within the normal rotational speedrange