【单选题】-----Why are you looking pleased? ----Oh, I’ve just had a job _________.
【简答题】小题1:—I’ve decided to pull out the tooth. I can’t stand this pain. —I’m afraid you’ve made a wrong _________(decide). You’d better see the dentist and take his advice. 小题2:—Great changes have taken pla...
【多选题】香柠檬油可用于化妆品。香柠檬油含微量的香柠檬酚和香柠檬醚,其结构如图。下列说法正确的是 [ ]
B.
1mol香柠檬酚最多可与2molBr 2 发生反应
D.
1mol香柠檬酚在NaOH溶液中水解时能消耗3molNaOH
【单选题】---_____? ---I don’t feel very well today. I’ve got a pain here.
A.
Can I take your temperature
D.
How long have you been like this
【多选题】香柠檬油可用于化妆品。香柠檬油含微量的香柠檬酚和香柠檬醚,其结构如图。下列说法正确的是( )
B.
香柠檬醚最多可与7molH 2 发生加成反应
C.
1mol香柠檬酚最多可与3molBr 2 发生反应
【单选题】把计算机网络分为有线网络和无线网络的分类依据是( )。
【单选题】--I’ve got a pain in my chest and a terrible headache. -- ___________ ? [ ]
C.
Do you feel short of breath
【单选题】香柠檬油可用于化妆品。香柠檬油中含微量的香柠檬酚和香柠檬醚,其结构分别如图。下列说法不正确的是
B.
1 mol香柠檬酚在NaOH溶液中水解时最多消耗2 mol NaOH
C.
可用FeCl 3 溶液来鉴别香柠檬酚和香柠檬醚
D.
香柠檬酚和香柠檬醚均能与溴水反应,但反应类型不完全相同