听力原文:M: The single fare is $832 first class and $516 second class. And the return fare is the same price. W: Second class, with a return ticket, please. Q: how much should the woman pay for the ticket? (3)
A.
$1,664
B.
1032
C.
1348
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
皮皮学刷刷变学霸
举一反三
【简答题】一般情况下,也就是干燥而触电危险性较小的环境,安全电压规定为 V 。对于潮湿而危险性较大的环境,安全电压规定为 V 。