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【简答题】中间继电器的作用
【简答题】什么是电流继电器、电压继电器和中间继电器？中间继电器的作用是什么？
【简答题】时间继电器的作用是()，中间继电器的作用是()和()，信号继电器的作用是()，在继电保护装置中，它们都采用()式结构。
【单选题】Why did the girl want to make money?
A.
She wanted to buy a new bike.
B.
She wanted to go traveling.
C.
She wanted to have a dog.
【单选题】Why did Carolyn set up her own consultancy?
A.
She wanted to work independently
B.
She wanted to work on a greater variety of projects.
C.
She felt she could do better than the company she worked for
【简答题】Why did the woman make the phone call? A) She wanted to chat with Wang Lin. B) She wanted to complain about their terrible after-sales service. C) She wanted to be an English telephone operator. D) Sh...
【简答题】说明中间继电器的作用。
【简答题】A．She wanted to buy something useful. B．She wanted to buy something extraordinary. C．$he wanted to buy something expensive. D．$he wanted to buy something valuable.
【单选题】20110262在Access数据库表中有一个姓名字段,如果要查找该字段中姓李的记录,则查询条件表达式为(62)
A.
Not“李”
B.
Like“李*”
C.
IN（“李”）
D.
“李”
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