【評論主題】Advertising has gradually taught most of us to adopt a questioning attitude about what we view on te
【評論內容】require translation
【評論主題】906.如圖所示,A、B、C、D四輪之齒數分別為80、40、100、50,若旋臂m順時針5rpm,A輪逆時針3rpm,則D輪之轉速為____rpm (A)+27 (B)-27 (C)-21 (D)+
【評論內容】
A+ B- C- D+ 首末兩輪轉向相同故輪系值取負+
ND-5/-3-5=80X100/40X50 故ND 為-27
【評論主題】26. Taking too much fat and sugar ______ not healthy at all.(A) are (B) be (C) is (D) to be
【評論內容】is ?why not are
【評論主題】Accounting is a profession -------has always interested me.(A)which(B)in which(C)who(D)what
【評論內容】前面不是人名嗎 who??
【評論主題】一軸傳達10馬力之動力,迴轉數為30rpm,則作用於軸上之扭力矩為 (A)138.85 (B)238.85 (C)338.85 (D)438.85 kg-m。
【評論內容】P=T*W10=T*3.14