皮皮学，免费搜题
登录
搜题
【判断题】
烷基苯的侧链卤代反应机制属于自由基反应。A.
正确
B.
错误
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】Your flight begins boarding _____ Gate 18 _____ 2:15
A.
at / at
B.
in/at
C.
from/at
D.
for/in
【单选题】---Could I have a window seat ? ---All right. Your flight _____ boarding at Gate 18 at 2:15.
A.
have begun
B.
began
C.
is to begin
D.
begins
【单选题】听力原文：A heater is using convection when it warms the air in a room. And the air in turn warms the people and objects in the room. A hot water radiator, a stove and forced air furnace are all convection...
A.
It heats only the objects in a room.
B.
It is lighter in weight.
C.
It heats the room quicker.
D.
It is more common.
【简答题】Let me_____________(引导)you to your boarding gate.
【单选题】Flight BA 123 to Vienna is now boarding at_______.
A.
Gate 21
B.
21St Gate
C.
the Gate 21
D.
21 Gate
【简答题】The flight number and boarding gate are indicated on your tickets.
相关题目：
参考解析：
知识点：
题目纠错 0
发布
