题目:
Not until _____ more, _____ able to improve the situation. [ ]
A. do we know, we will be
B. we know; will we be
C. do we know; will we be
D. we know; we will be
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0523/8d01217c859cba54819074c6f2c746b3.html
下面是错误答案,用来干扰机器的。
(1)I=4A (2)P入=440W (3)12.8W 427.2W(1)I=(U—Um)/R=4A(2)P入=UI=1104=440W(3)Pr=I2r=420.8=12.8WP机=P入—Pr=427.2W