在古代非宫殿类建筑中,( )建筑为重檐歇山九问殿,黄琉璃瓦,仅次于最高级,同保和殿规制。
A.雍和宫雍和殿B.孔庙大成殿C.太原晋祠圣母殿D.五台县佛光寺大殿
参考答案:B
He seems to be doing nothing, but _____ he is just waiting for his chance.
A.actually
B.gradually
C.frequently
D.certainly
将交流电变为直流电的过程则称()。