宝瓶
参考答案：
宋式转角铺作斗栱或清式角科斗栱由昂之上，承托若角梁的瓶形木块。
—I knocked but nobody answered the door.
----They _____asleep then and didn’t hear you.
A．must be
B．should be
C．must have been
D．should have been
简述电动汽油泵的检测。
