《Lets Try Anal - Cheating Wife has Anal Sex with her Husband's Friend-快播av》

【Lets Try Anal - Cheating Wife has Anal Sex with her Husband's Friend-快播av】

【例(li)2】 1000瓦(wa)投光灯按(an)“单相(xiang)千(qian)瓦、4.5安”算得电流为4.5安。 对于电压更低的单相(xiang),口诀中没(mei)有提到(dao)。可以(yi)取220伏为标(biao)准(zhun),看电压降低多少,电(dian)流就反(fan)过(guo)来增大多少(shao)。比如36伏电(dian)压,