【简答题】短文改错(共10小题;每小题1分,满分10分) True friends are those lend you a helping hand instead of leave you when you get into trouble. True friend s pointed out your mistake and urge you to correct it when you do not...
【简答题】Instead of helping him cheat, the Internet is actually helping him _____ _____ ______ ________, while also helping to _______ ___ ____ _____ and ______ _____. 因特网并没有帮助他欺骗,而是帮他 了解学校课程 ,也帮他 发展生活 和 社交技能 ...
【单选题】Simon laughed at me______ helping me with my problem. [ ]
【多选题】分馏塔T110和薄膜蒸发器E114都是通过加热来分离物质,两者分离物质的共性是
【判断题】Senior
male colleagues tended to solve the problem for her, instead of helping her
find the solution.
【单选题】Millie and Kitty are good friends, they often _________ each other _________study.
【判断题】蒸馏是利用物质的相对挥发度不同进行分离的
【多选题】下列有关精馏说法中正确的是 ________ 。
A.
精馏是利用液体混合物中各组分挥发度不同的性质,将其进行高纯度分离的操作
B.
精馏塔内塔顶的液相回流和塔釜中产生的蒸气(气相回流)构成了气、液两相接触传质的必要条件
C.
精馏塔内溶液组分挥发度的差异( a>1 )造成了有利的相平衡条件( y>x )
D.
精馏区别于蒸馏就在于“回流”包括塔顶的液相回流与塔釜造成的气相回流
【判断题】诚信无欺是商人的基本准则,心志专一则是商人成功的必备素质。
【单选题】Thank you _____ me. [ ]