【判断题】由于醇的酸性比水弱,所以RO-的碱性比OH-强,因此醇化物遇水则分解成醇和金属氢氧化物。
【单选题】Why do adults believe that alcoholic awareness programs teach young people not to overdrink? Recently, reading an article about the alcohol-induced deaths of two students from two different universiti...
A.
How to Practise Drinking.
B.
Don't Drink Beyond Your Limit.
C.
My Personal Opinion on Alcohol Drinking.
D.
Teaching Kids to Drink Responsibly.
【单选题】下列关于新型冠状病毒的说法不正确的是( )
【单选题】Why do young people stress the importance of a healthy family life?
A.
They want to live a comfortable life.
B.
With the constantly added pressures of the outside world, they need a healthy family for emotional shelter.
C.
They don't want to make a living by themselves.
D.
They prefer to live with their parents.
【单选题】钢筋直弯钩增加长度为 d ( d 为钢筋直径)。
【判断题】由于醇的酸性比水弱,所以烷氧基的碱性比OH-强,因此,醇化物遇水则分解为醇和金属氢氧化物。