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搜题
【多选题】
混合型搜素引擎的功能包含以下哪些类型搜素引擎的功能A.
目录型搜素引擎
B.
关键词型搜素引擎
C.
综合型搜素引擎
D.
单独型搜素引擎
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参考解析：
知识点：
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.
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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