After graduation, he worked as a typist until 2013, he met four young men, who were interested in starting a computer and Internet company. A. when B. where C
A student was one day taking a walk with his teacher. As they went along, they saw a pair of old shoes lying in the path. They were a poor farmer’s, who was working in the nearby field.
=
A=8.3 A.
=
得U1=
U2=18×12 V=216 V，所以电压表的读数为216 V.
，得I1=
I2=
×8.3 A=0.46 A，所以电流表的读数为0.46 A.