在产品价值评价时,若A、B、C、D四种零件的价值系数分别为VA=0.5,VB=0.8,VC=1 VD=1.2,则应重点研究的对象是( )。
A.A
B.B
C.C
D.D
参考答案:A
149. --- Look, that gentleman is wearing a beautiful _____ watch.
--- I don’t think it is real one. Perhaps it is just a _____ one.
A.gold; gold
B.golden; gold
C.golden; golden
D.gold; golden
典型卵巢畸胎瘤X线表现为()
A.输卵管受压变形
B.瘤体密度不均
C.卵巢增大,边缘光滑
D.瘤内有透亮区
E.盆腔见骨组织及牙齿影