【单选题】某机床的切削力为F,则其总切削力大约为: ( )
【单选题】多媒体通信系统中,哪一种多媒体数据约束关系最重要?
【简答题】宋代的()书院与()书院因声誉不断、历久弥新而在宋初四大书院和南宋四大书院都各占有一席之地。
【多选题】宋代四大书院分别是江西九江的——————、湖南长沙的————、河南登封的嵩阳书院、河南商丘的应天府书院。
【单选题】在直流稳压电源电路中滤波的目的是( )。
【单选题】宋代著名的四大书院是:白鹿书院、岳麓书院、石鼓书院和( )
【单选题】他打开灯,发现房间里有一个陌生人, 大为惊异。
A.
When he turned off the light, he was amazed to find there was a stranger in hisroom.
B.
When he turned on the light, he was amazed to find there was a stranger in his room.
C.
When he turned up the light, he was amazed to find there was a stranger in his room.
D.
When he turned down the light, he was amazed to find there was a stranger in hisroom.
【单选题】在直流稳压电源电路中滤波的目的是( )。