皮肤浅表起______、______、______的病统称为疮。
参考答案：丘疹 疱疹 破后糜烂
295B、WK—4、WK—10电铲回转托辊数目？结构不同？优势？
Which of the following is a disadvantage of using price-to-sales (P/S) multiples in stock valuations
A. P/S multiples are more volatile than P/E multiples.B. The use of P/S multiples can miss problems associated with cost control.C. P/S multiples are not available for all firms, unlike the P/E ratio.
