尘肺病的发生与工人接触矿尘的时间长短没有关系.
参考答案:错
给下列句子排序。
( ) Did you read books?
( 1 ) What did you do yesterday?
( ) Did you clean your room?
( ) I went to the park.
( ) No, I didn't clean my room.
( 6 ) Yes, I read some books.
萎缩性胃炎与浅表性胃炎最确切的区别是()
A.病变部位
B.黏膜厚度
C.炎症细胞浸润的深度
D.胃黏膜固有腺体萎缩
E.以上都不是