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【单选题】
用8位二进制能表示是最大的无符号整数等于十进制整数A.
256
B.
128
C.
255
D.
127
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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】18年6月B级听力 Section D Directions: In this section you will hear a recorded short passage. The passage is printed in the test paper, but with some words or phrases missing. The passage will be read three...
【单选题】根据法拉第定律MR接收线圈产生的感应电流的特点是（）
A.
感应电流的大小和横向磁化矢量成反比
B.
感应电流随时间周期的增加而增加的振荡电流
C.
感应电流又称之为自由感应增益
D.
感应电流的幅度呈线性变化
E.
感应电流的幅度呈指数变化
【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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