以会友、小憩客人为主要市场的餐饮类型是()
A.主题餐厅
B.风味餐厅
C.咖啡厅
D.快餐厅
参考答案:C
—Do you know our town ?
----No ,this is the first time I _____here .
A.come
B.am coming
C.came
D.have come
简述阀门密封填料函泄露的原因?