应激性溃疡突出的症状是
A.上腹剧痛B.反酸嗳气C.心窝部烧灼感D.突然发生上消化道出血或穿孔E.频繁恶心呕吐
参考答案:D
When the old woman was to cross the street, she was knocked down by a car and badly ______.
A.destroyed
B.wounded
C.damaged
D.injured
下列()硫磺回收尾气处理装置的投资费用最低。
A、SCOT
B、串级SCOT
C、Chinsulf-SDP
D、Superclaus