A、a doctor should hide
B、should a doctor hide
C、a doctor would hide
D、a doctor will hide
A、a doctor should hide
B、should a doctor hide
C、a doctor would hide
D、a doctor will hide
A、VREF电压4.3V,OUT2电压为4.4V
B、E1正端电压为6V,GND电压为0V
C、NEV1电压为4.5V,OUT1电压为7.5V
D、OUT2电压为8V, PLUG电压为1.7V
计算题:单相变压器的一次电压U1=3000V,其变比K=15,二次电流I2=60A时,试分别求一次电流及二次电压为多少?
A、Because he was a new teacher.
B、Because it was the first day of school after the winter vacation.
C、Because it was the first day of school after the summer vacation.
D、Because it was his first day in this new university.
A、A great deal of noise from students.
B、The music from students’ iPods.
C、The tremendous applause.
D、An immense silence.
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