电压互感器V,v接线,当U相二次断线,若Uvw=100V,在二次侧带一块三相三线有功表时,Uuw=()V。
A、0
B、50
C、57.7
D、100
参考答案:D
潜水艇在水面下某处受到水的压强是3×105Pa,此处的水深为______m.(g取10N/kg)
Teacher's words and deeds______a great effect________their students.[ ]
A. have; on
B. give; to
C. make; in
D. take; to