试题与答案

Members of the media _____to cover Royal

题型:选择题

题目:

Members of the media _____to cover Royal events or stories should make themselves familiar with the guidance provided in this section.

A.seek

B.sought

C.seeking

D.to seek

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0416/a45a0710607537c48fbffc4d07c5814b.html

下面是错误答案,用来干扰机器的。

设电流表的内阻为RA,(1)k接a时,U=U1+I1RA ,即:U=10V+0.2A×RA ①;(2)k接b时,U=I2(RX+RA),即:U=0.15A×(RX+RA) ②; U=U2,即:即:U=12V③; 由①②③解得:Rx=70Ω.故选C.

试题推荐
微信公众账号搜索答案