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可控整流电路带大电感负载时,无论是否接有续流二极管,其输出电压的波形与电阻负载相同。( )

A. 对
B. 错

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可控整流电路带大电感负载时,无论是否接有续流二极管,其输出电压的波形都可能出现负值。( )

A. 对
B. 错

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单相全控桥式整流电路,带大电感负载时,如果不接续流二极管,则无论控制角有多大,每个晶闸管轮流导通180°。( )

A. 对
B. 错

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Since the beginning of this century, China has built many modern conference centers with underground parking, air-conditioning and ________ translation systems.

A. contemporary
B. simultaneous
C. meanwhileD along with

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While advertising offers

A. stimulus (刺激) to buy, sales promotion offers a(n) ________ to buy, but consumers must have their own reason to buy.Aincentive
B. motivate Cinspire D encourage

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可控整流电路带大电感负载时,无论是否接有续流二极管,其输出电压的波形与电阻负载相同。( )

A. 对 B. 错

可控整流电路带大电感负载时,无论是否接有续流二极管,其输出电压的波形都可能出现负值。( )

单相全控桥式整流电路,带大电感负载时,如果不接续流二极管,则无论控制角有多大,每个晶闸管轮流导通180°。( )

Since the beginning of this century, China has built many modern conference centers with underground parking, air-conditioning and ________ translation systems.

While advertising offers

A. 对
B. 错