下列哪些属于机械引起的皮肤病?()
A.鸡眼
B.褥疮
C.摩擦性苔藓样疹
D.胼胝
E.痱子
参考答案:A, B, C, D
下列各句均有一处错误,找出来并在横线上改正。
1. — What are they doing? — They are play.
2. Jenny have a brother and two sisters.
3. Jim Smith is Jenny's father. He is an carpenter.
水闸的平地板浇筑顺序()。
A.底板先于墩墙
B.墩墙先于底板
C.墩墙与底板同时
D.均可