【单选题】Student
A.
I wonder whether you are satisfied with the new equipment. Student
B.
______. It gives me a lot of trouble.
【简答题】电子仪表部件常用的一种高分子材料DAP的结简式为: X为未知部分的结构,各物质间有如下转化: 试根据下列信息回答相关问题: 已知: (1)A是一种脂肪烃,B的官能团的名称是___________,B生成C的化学反应方程式是_____________。 (2)D的分子式是 ,分子内所有碳原子共平面,D在一定条件下可以生成五元环酯,其结构简式是______________。 (3)F发生银镜反应的化学...
【简答题】I love exploring new places. Whether I travel across America or around the world,a new adventure is always waiting. What I don’t always enjoy is the time spent 9,000 meters(30,000 feet)in the air. Tig...
【简答题】费耐尔模型使用的是一种由多重指标支持的( )个潜在变量组成的模型。
【单选题】My son will go to New York for study. I am wondering ____ he ____ miss me or not.
【单选题】I am quite ______ that the new cosmetics, whether it appears in the form of tablet, capsule, powder or injection, will _______ through the country among young ladies. [ ]
A.
optimistic about; sweep
D.
pessimistic about; spread