属轮机部负责的应急救生设备有()。A.救生艇发动机、水密门 B.救生艇发动机、逃生 发布时间:2017-07-04 18:54 │ 来源:www.tikuol.com 题型:单项选择题 问题: 属轮机部负责的应急救生设备有()。A.救生艇发动机、水密门 B.救生艇发动机、逃生孔 C.应急消防泵,救生艇发动机 D.水密门、逃生孔
题型:单项选择题 下列有关物质性质和应用叙述正确并且有因果关系的是( )A.烧碱具有碱性,能用于治疗胃酸过多B.焦炭具有还原性,一定条件下能将二氧化硅还原为硅C.浓硝酸具有强氧化性,能和浓氨水反应产生白烟D.二氧化硫具有漂白性,与氯水混合使用漂白效果更好 查看答案
题型:单项选择题 Directions.Suppose you were taken good care of by Aunt Wang when you visited Shanghai where she lived. Write a letter to her to extend your appreciation.Begin your letter as follows:Dear Aunt Wang,You should write about 100 words on ANSWER SHEET 2. Do not sign your own name, using "Li Ming" instead. Do not write the address. 查看答案