【单选题】下列化合物与2,4-二硝基苯肼反应的活性最强的为()
A.A
B.B
C.C
D.D
- · 有5位网友选择 D,占比55.56%
- · 有2位网友选择 B,占比22.22%
- · 有2位网友选择 C,占比22.22%
A.A
B.B
C.C
D.D
A、reserves in the banking system increase.
B、reserves in the banking system decline.
C、Federal Reserve liabilities remain unchanged.
D、Federal Reserve liabilities decline.
A、solution
B、articulation
C、appreciation
D、speculation
A、the price of autos within the nation will rise by 10 percent.
B、the price of autos within the nation will rise by more than 10 percent, because of high effective protection.
C、the price of autos within the nation will rise, but by less than 10 percent because it is small nation.
D、the price of autos will not rise because of internal competition.
A、it is an independent section
B、it is a composing part of a section
C、it can either be an independent section or a composing part of a section
D、it can replace the conclusion section
【单选题】完成下列合成,正确的方法是( )
A、经α-卤代反应合成
B、经傅-克酰基化反应合成
C、经二氧化硒氧化合成
D、经烯胺合成
【单选题】实现下列转化,正确的方法是( )
A、催化加氢
B、金属氢化物还原
C、与硫醇加成后再催化加氢
D、Clemmensen法
为了保护您的账号安全,请在“简答题”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!