下列哪一项不是多毛细胞所具有的特点?()
A.胞体大小不一
B.细胞边缘不整齐
C.细胞呈圆或多角形
D.有许多不规则纤绒毛突起
E.核染色质呈块状
参考答案:E
. The dictionary published by Oxford University Press recently has really ______ because it is of great use to the learners of English.
A.taken away
B.taken down
C.taken off
D.taken out
造成基托内存在大面积微小气泡的原因是()
A.塑料调和时单体过多
B.塑料调和时单体过少
C.填塞塑料过早
D.填塞塑料过迟
E.热处理升温过快