【判断题】抢救触电者时,用手及时将其拉离触电处。()
【单选题】Ten years ago ___ only one building in our school. And in 10 years, ___ five buildings in our school. [ ]
A.
there will be, there are
C.
there was, there will be
D.
there will be, there was
【简答题】按总线各元器件的总体总部局结构划分,主板可分为AT主板和____主板。
【简答题】如图所示电路,已知i1=3.75A,试求下图所示电路中的电流i2。
【单选题】在抢救中,只有( )才有权认定触电者已经死亡。
【单选题】Our math teacher ______ in our school for 20 years and he ______ here when he was 23 years old. [ ]