An airport is _____ of several areas and structures that provide services for aircraft and passengers.
A. framed
B. composed
C. made
D. formed
查看答案
下列化合物的沸点最高的是:
A. 正丁醇
B. 异丁醇
C. 1,3-丁二醇
D. 叔丁醇
下列化合物沸点最高的是:
A. CH3(CH2)4CH3
B. CH3(CH2)4CH2Br
CH3(CH2)4CH2I
D. CH3(CH2)4CH2OH
用卢卡斯试剂鉴别下列化合物,最先出现浑浊的是:
A. 1-丁醇
B. 2-丁醇
C. 2-甲基1-丙醇
D. 2-甲基-2-丙醇
鉴别1-丁醇和2-丁醇可以用的试剂是:
A. KI/I2
B. I2/HCl
C. ZnCl2/HCl
D. Br2/CCl4