问题 单项选择题

调压器应保证使用安全,运行可靠,便于维护,指挥器进口应设有()来保证正常工作。

A.阀门

B.压力表

C.过滤器

D.旁通

答案

参考答案:C

改错题

改错题。

One cold winter day in 1900, a small boy calling                                                           1.________

Charlie Chaplin walking along the street in London.                                                       2.________

He did not have breakfast and lunch. He wanted to                                                       3.________

buy some bread, and he didn't have any money.                                                            4.________

His father dead when he was very young. His                                                                5.________

mother was often very sick, and she could not take                                                        6.________

care of Charlie or his brother. All of them had to                                                           7.________

work to help their sick mother.

     He was a small boy but his dream was not very big.                                                 8.________

He wanted to be great man in the world of film. So                                                       9.________

he worked very hard to sing and danced well.                                                              10.________

单项选择题 A1/A2型题