男性,73岁,呼吸窘迫3天,既往有高血压、冠心病史,行肺灌注/肺通气显像如图,诊断是()。
A.未见肺栓塞表现
B.多发肺栓塞
C.COPD
D.多发肺转移癌
E.肺结核
参考答案:B
It is _______ it was yesterday.
A.as beautiful day as
B.as a beautiful day as
C.as beautiful a day as
D.beautiful as a day as
高炉冷却用水有什么原则?