Directions: For this part, you are required to write a letter. Suppose you are Wang Kai. A former c...

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Theyoungladywatchedherdaughterayoyoyesterdayafter

to play with playing with to play plays

Sheusednottolikeplayingyo-yonowshelikesitverymuch.

and but or so

Directions:Forthispartyouarerequiredtowriteacompos

Yo/△接线变压器的差动保护为什么对Yo侧绕组单相短路不灵敏如何解决

PartA Directions:Youareplanningtoaskyourfriendtoj

Directions:Forthispartwriteapassageabout100~-120wo

PartB Directions:Writeonacompositionaccordingtoth

Ofthefollowing______iscorrect．

the Sailing Directions Book is also known as Pilot Book the Sailing Directions Book and the Pilot Book are different books the Pilot Book is a part of the Sailing Directions the Sailing Directions Book contains the Pilot Book"

我国现在常见的变压器接线组别的连接方式为

Yo/△-11；Y/Y-12；Y/△-11 Yo/△-11；Y/Yo-12；Y/△-11 Y/△-11；Yo/Y-12；Y/Y-12 Y/△-11；Y/Y-12；Y/Yo-12

Directions:Forthispartwriteapassageabout100～120wor

当舞台照明采用可控硅调光设备时其电源变压器宜采用的接线方式为

Δ/Δ Yo/Yo Yo/Δ Δ/Yo

设Y/Yo−12变压器变比为1不计负荷电流情况下当Yo侧单相接地时Y侧的三相电流是

Y 侧故障相电流等于 Yo 侧故障相电流 Y 侧故障相电流等于 Yo 侧故障相电流的 2/3 Y 侧非故障相电流等于 Yo 侧故障相电流的 1/3 Y 侧故障相电流等于 Yo 侧故障相电流的 3/2

我国现在常见的变压器接线组别的连接方式为

Yo/△-11；Y/Y-12；Y/△-11 Yo/△-11;Y/Yo-12;Y/ △-11 Y/△一ll;Yo/Y-12;Y/Y-12 Y/△-11;Y/Y-12;Y/Yo-12

Directions: For this part, you are required to write a letter. Suppose you are Wang Kai. A former c...

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