【单选题】对于小容量晶闸管,在其控制极和阴极之间加一个并联( ),也可对电压上升率过大引起晶闸管误导通起到良好的抑制作用。
【简答题】用所给代词 形式 填空。 ______( He) schoolbag is heavier than_____ (she).
【单选题】- Is this your schoolbag? - No, it isn't. Ask Bill. He is looking for_______.
【简答题】These books are ______ ( I ) . 2.That is _______( she ) sister. 3. L ily is _______ ( Lucy ) sister. 4. Tom, this is _____ ( I ) cousin, Mary. 5. Now _____________(her parent) are in China. 6. That i...
【简答题】__(he) schoolbag is heavier than____(she).