【判断题】采用综合重合闸后,在发生单相接地短路时,断路器的动作状态是跳任一相。
【单选题】It’s very common _____ that people ______ went to school for further education.
A.
in the 1990; in the fifty
B.
in the 1990s; in their fifties
C.
in their 1990s; in their fifties
D.
in their 1990s; in the fifty
【简答题】阅读理解。 Online shopping has become something very common for young people, however, it's not easy for the old people to buy things on the internet. Therefore, offline Daigou stores, or buy-for-you store...
【单选题】旅游应用文的特点是:实用性、针对性、时效性、规范性和( ).
【单选题】采用综合重合闸后,在发生单相接地短路时,断路器的动作状态是 ( ) 。
【单选题】以下不属于计算机外部设备的是______。
【单选题】以下不属于计算机外部设备的是______。