皮皮学，免费搜题
登录
搜题
【简答题】
一连馏塔分离二元理想混合溶液,已知精馏段某塔板的气、液相组成分别为 0.83 和 0.70 ,相邻上层塔板的液相组成为 0.77 ,而相邻下层塔板的气相组成为 0.78( 以上均为轻组分 A 的摩尔分数,下同 ) 。塔顶为泡点回流。进料为饱和液体,其组成为 0.46 。若已知塔顶与塔底产量比为 2/3 ,试求: (1) 精馏段操作线方程; (2) 提馏段操作线方程。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】PASSAGE 2 - Q21
A.
Young and healthy people.
B.
People of a high level of fitness.
C.
People of most levels of fitness.
D.
People loving adventure.
【简答题】Translate the passage 莫言,因其作品“将魔幻现实主义与民间故事、历史与当代社会融合在一起”而获得诺贝尔文学奖,是首位获此殊荣的中国籍作家。莫言出生于山东高密,从小辍学,21岁离家参军。许多人是通过导演张艺谋的电影 正式改编自莫言的同名小说。莫言小说中的故事多发生在高密,在三十几年的写作生涯中,这个地方激发了他许多创作灵感。
【单选题】(Passage 2) 21.
A.
Specify what they would like to do after graduation.
B.
Describe in detail how much they would enjoy studying.
C.
Indicate they have reflected and thought about the subject.
D.
Emphasize that they admire the professors in the university.
【单选题】Passage 2-21
A.
She closed her free blog service last week.
B.
She was upset when her favorite site was closed.
C.
Her website is still strong and it is about the history of blogs.
D.
Her diary has editions in at least four different languages.
【单选题】Passage 2-21
A.
Friends and neighbours.
B.
Teachers and friends.
C.
Parents and friends.
D.
Parents and grandparents.
【单选题】Passage 2 21.
A.
Communication with words.
B.
Communication without words.
C.
Communication with body language.
D.
Communication without signs.
相关题目：