UPS能够提供持续、稳定、不间断的电源供应的重要外部设备。 发布时间:2017-07-21 20:50 │ 来源:www.tikuol.com 题型:判断题 问题: UPS能够提供持续、稳定、不间断的电源供应的重要外部设备。
题型:判断题 It ____ for three hours and the ground is too wet toplay on, so the sports meet _____. [ ]A. was raining;has been put off B. has been raining;has been put off C. has rained; put off D. has been raining;has put off 查看答案