【单选题】丙烯醇在一定条件下可转化为丙烯醛: 。下列有关说法错误的是
A.
丙烯醇与丙醛(CH 3 CH 2 CHO)互为同分异构体
C.
可用新制Cu(OH) 2 鉴别丙烯醛和丙烯醇
【简答题】《风险管理与食品安全》发表于_____年。
【单选题】丙烯醇在一定条件下可转化为丙烯醛:CH2=CHCH2OH,CH2=CHCHO, 下列有关说法错误的是()。
A.
丙烯醇与丙醛(CH3CH2CHO)互为同分异构体
C.
1 mol丙烯醛可以和 2 mol氢气发生加成反应
【单选题】According to the conversation, Ruth calls Tim because she wants______.
A.
him to welcome the new students
B.
him to be a volunteer for the new students
C.
to see if he is free on weekends
D.
to help him with the textbook orders
【简答题】丙烯醇在一定条件下可转化为丙烯醛:CH2=CHCH2OHCH2=CHCHO, 下列有关说法错误的是A. 丙烯醇与丙醛(CH3CH2CHO)互为同分异构体 B. 丙烯醇含有两种官能团 C. 1 mol丙烯醛可以和 2 mol氢气发生加成反应 D. 此转化过程中丙烯醇被还原
【单选题】常用的钢材表面清理方法有很多,下列不属于常用表面清理方法的是
【单选题】According to Tim Holmes of Ford Europe,battery—powered cars__________.
A.
will be the main transportation vehicles in the future.
B.
will not be the main transportation vehicles in the future.
C.
will be good to the environment in the future.
D.
will replace petrol—powered vehicles in the future.