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
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._____ |