问题
单项选择题
锅炉烟灰一般不用（）清除。
A．手工
B．机械
C．除灰剂
D．蒸汽或压缩空气
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
锅炉烟灰一般不用（）清除。
A．手工
B．机械
C．除灰剂
D．蒸汽或压缩空气
参考答案：B
| 补全对话。 | |
B: 1 Where are you going to spend your holiday? A: I want to go abroad for my holiday. B: 2 A: Many countries, such as Italy, Japan, Britain, Australia and so on. B: That sounds good! 3 A: My favourite country is Australia. B: 4 A: Because I really want to visit the Sydney Opera House and the Habour Bridge, and the people there are very polite. B: I agree with you. 5 1._____ 2._____ 3._____ 4._____ 5._____ |