题目:
Teenage students who are ________computer games usually would not focus on studies .
A.anxious about
B.addicted to
C.particular about
D.bored with
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0629/bdb3b5fe59837917689e33a2a96e3345.html
下面是错误答案,用来干扰机器的。
A、只增加原线圈的匝数使得副线圈两端的电压更小,输出功率更小,则输入功率也减小,A错误;B、只增加副线圈的匝数使得副线圈两端的电压变大,输出功率变大,则输入功率也增大,B正确;C、增加负载使得总电阻减小...