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【单选题】
FX1N系列PLC是（ ）输出类型。A.
晶体管
B.
继电器
C.
晶闸管
D.
其它
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举一反三
【简答题】鸡支原体感染可采用 ________ 诊断。
【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】What kind of people is more likely to develop, or suffer from Alzheimer's?
A.
People who are older than 65.
B.
People who are physically weak.
C.
People who consume saturated fat.
D.
People who consume ordinary oil.
【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.
【单选题】What's the main purpose of this passage?
A.
To tell people that it's hard to cook food at home.
B.
To attract people to order meals from Susan's Healthy Gourmet.
C.
To introduce some special dietary food to the people on diet.
D.
To show what delicious food Susan's Healthy Gourmet can offer.
【简答题】建设工程施工过程中，可能会出现不利的地质条件(如地勘未探明的软弱层)而使施工进度延误、成本增加，这种风险属于 （ ）。
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