【简答题】Suppose you work in a big firm and find English important for your job because you often deal with foreign businessmen. Now you are looking for a place where you can improve your English, especially y...
【单选题】-You are Jim Green, aren't you? -______. [ ]
【判断题】逻辑代数又称为布尔代数或开关代数,是研究逻辑电路的数学工具。
【多选题】催化剂的基本特征包括_______。
A.
催化剂能加快化学反应速率,而它本身不进入化学反应的计量。
B.
催化剂对反应有选择性,即对反应类型、反应方向和产物的结构具有选择性。
D.
催化剂只能改变化学反应速率,而不能改变化学反应平衡位置(平衡常数)。
E.
催化剂既能加速正反应,也能同样程度地加速逆反应。
【单选题】It's eight o'clock. Jim's father __ TV. [ ]
【单选题】— You should apologize to her, Barry. — _____, but it's not going to be easy. [ ]