【简答题】On the day of the race , my grandfather and his friend fed the dog lots of cakes so it wouldn't want to run.(英译汉)
【单选题】对于220KV以下的电网,电网中电气设备的绝缘水平主要由 ( )决定。
【单选题】220kV及以下电网中电气设备的绝缘水平主要决定于()。
【简答题】Listen to the following dialogue on dog day care. Q: How much would you need to pay to send your dog to day care?A. It
would be inexpensive. B. It
would cost a lot of money. C. It
would be a free ser...
【多选题】按照《国家电网公司2011年新建变电站设计补充规定》要求,智能变电站电气二次部分间隔层设备配置原则包括()
A.
220kV及以下电压等级测控装置宜采用保护测控一体化装置。
B.
110kV及以下电压等级测控装置宜采用保护测控一体化装置。
C.
故障录波装置应记录所有过程层SV、GOOSE网络报文。
D.
故障录波装置应至少记录双A/D数字采样信号中用于保护判据的一组数据。
E.
行波测距装置采样值应采用网络方式传输,行波测距装置数据采样频率应大于500kHz。
【单选题】男,73岁。慢性咳嗽、咳痰20余年,每年持续3-4个月,近2-3年出现活动后气短,有时双下肢水肿。今日晨起突感左上胸针刺样疼痛,与呼吸有关,继之出现呼吸困难、大汗,不能平卧,来院就诊。该患者呼吸困难最可能的原因是
【简答题】阅读理解。 One day a boy took a young dog to a music company . He told the manager (老板) that his dog could dance to music. Then the manager asked his men to play the tape (播放磁带). When the dog heard music. ...