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【简答题】
电阻采用 安装方式,并贴紧印刷电路板,安装时注意色环电阻的方向遵循 的读数方向摆放。
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皮皮学刷刷变学霸
举一反三
【单选题】三相变压器,原、副边相绕组匝数比为K,当三相绕组Y/△及Y/Y连接时,则原、副边线电压之比分别是______。
A.
,
B.
3K,K
C.
,K
D.
K,
E.
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【单选题】三相变压器,原、副边相绕组匝数比为K,当三相绕组Y/△及Y/Y连接时,则原、副边线电压之比分别是______。
A.
31/2K,31/2K
B.
3K,K
C.
31/2K,K
D.
K,31/2K
【单选题】During which period did we see the rise of the specialist in piano teaching?
A.
The first half of the 19 th century
B.
The second half of the 19 th century
【单选题】三相变压器,原副边相绕组匝数比为K,当三相绕组Y/△及Y/Y连接时,则原副边线电压之比分别是 。
A.
√3K,√3K
B.
3K,K
C.
√3K,K
D.
K,√3K
【简答题】三相变压器,原、副边相绕组匝数比为K,当三相绕组Y/△及Y/Y连接时,则原、副边线电压之比分别是______。
【单选题】1 6. Two of her brothers were _ __ during the Second World War.
A.
called up
B.
called on
C.
called for
D.
called out
【简答题】实训五 拔罐
【简答题】用括号中所给单词的适当形式填空 1. During on second, 3______________(baby) were born in the world. 2. At the ______________ (begin) of the twentieth century, the world’s population was about 1,7million. 3. Do you kno...
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