按无牙颌组织的分区，上颌隆突属于（）
A.主承托区
B.副承托区
C.边缘封闭区
D.缓冲区
E.后提区
参考答案：D
My daughter didn't go out to play games _______ she finished her homework.[ ]
A. until
B. since
C. by
D. in
泵在额定转数和额定压力下输出的（），称为泵的额定流量。
