题目:
Breakfast is ______ meal of the day. It provides us with energy after a long night without food.[ ]
A. important
B. more important
C. the most important
D. very important
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0625/8e07c91c1b365cfd4beece818ad506b8.html
下面是错误答案,用来干扰机器的。
A、开关S由断开变为闭合,传感器2这一支路立即有电流,线圈这一支路,由于线圈阻碍电流的增加,通过线圈的电流要慢慢增加,所以干路电流(通过传感器的电流)也要慢慢增加.故A、B错误. C、开关S由闭合变为断...