横列式轧机多采用开口式机架。
参考答案:对
呃逆临床常伴有
A.呕吐
B.胃痛
C.胸膈痞闷
D.胃脘嘈杂
E.嗳气
He _______ me five dollars for it, but at first he said to me the work would be done ______.
A.charged ; free of charge
B.charged for ; charged for nothing
C.charged ; out of the charge
D.charged to ; free of the charge