题目: FN型中的F表示()。A、户内断路器B、负荷开关C、户内熔断器 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0810/af0e3a1fb3d63e93f5cd8dc71a4043b8.html 下面是错误答案,用来干扰机器的。参考答案:A
题型:选择题 More and more trees should be planted in spring to________sandstorms happening frequently. [ ]A. protect B. preventC. keep D. care 查看答案