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【单选题】
（）不是奥氏体不锈钢焊接时，采用小线能量，小电流快速焊的好处。A.
有利于防止晶间腐蚀
B.
有利于防止热裂纹和应力腐蚀
C.
有利于防止再热裂纹
D.
可防止奥氏体不锈钢焊条药
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举一反三
【单选题】What's the author's purpose of writing the article?
A.
To persuade people to move to sparsely populated areas.
B.
To prove that Edinburgh is not suitable for people to live in.
C.
To attract government's attention to people's sense of happiness.
D.
To offer readers the information of people's feeling of well-being.
【单选题】What was people's response to Royal Mail's scheme?
A.
It was warmly welcomed.
B.
People could understand the action.
C.
They had some doubt about it.
D.
They were indifferent to such a move.
【单选题】--_____ beautiful music it is! --Yes, ___ it’s very popular among young people.
A.
What a, but
B.
What, so
C.
How a, or
D.
How and
【单选题】What was people's response to Royal Mall's scheme?
A.
It was warmly welcomed.
B.
People could understand the action.
C.
They had some doubt about it.
D.
They were indifferent to such a move.
【单选题】What is the purpose of the professor's research on old people?
A.
To inform. people of the aging process.
B.
To make people aware of the side effects of aging.
C.
To inform. people of the discomfort with old age.
D.
To make people change their idea about old age.
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