如图,AB∥CD∥EF,AF∥CG,则图中与∠F(不包括∠F)相等的角有( )
A:1个
B:2个
C:3个
D:4个
What good news! Our school band (乐队)will play at Harbin Summer Concert in August.
7×4+25=____
42÷7-3=____
某发电站的输出功率为104kW,输出电压为4kV,通过理想变压器升压后向80km远处供电.已知输电导线的电阻率为ρ=2.4×10﹣8Ω•m,导线横截面积为1.5×10﹣4m2,输电线路损失的功率为输出功率的4%,求:
—May I come in?
—Yes, come in. But _______ again.