当前位置:百科知识 > 知到望闻问切答案

问题描述:

[单选] ( 英英释义)This shows that you can install an alternative relay.
A.This shows that a backup relay may be installed. B.This indicates that an additional relay may be installed. C.This shows that an ordinary relay may be installed.
参考答案:查看
答案解析:
☆收藏

随机题目