输入到整流变压器初级侧的交流电压称为()、整流变压器输出的直流电压称为()。
参考答案:一次电压;二次电压
小题1:Who is this postcard sent to?
A.Peter.
B.Gemma.
C.Kim.
D.Tom.小题2:Which country does this postcard come from?
A.Canada.
B.China.
C.England.
D.Australia.小题3:How did Tom go to Holiday Cove?
A.By plane.
B.By ship.
C.By car.
D.By train.小题4:Why does Peter want to go to the aquarium instead of the crocodile farm?
A.Because he has visited it before.
B.Because he is afraid of crocodiles.
C.Because he is interested in dolphins.
D.Because he has no tickets to the crocodile farm.小题5:Where is Tom going on Friday?
A.Holiday Cove.
B.Rest Harbor.
C.Mill Hill.
D.Golden Beach.
下列不是绝经后子宫内膜病理状态时的表现的是()
A.子宫内膜仅有表面上皮,几乎不见腺体和间质
B.再现分泌期形态
C.退行性增生
D.单纯性增生
E.复杂性增生