T23、T24钢的微观组织为贝氏体-马氏体钢()
参考答案:对
某男,60岁,慢性支气管炎病史20年,近半年活动后心悸气短。查体:有肺气肿体征,两肺散在干湿啰音,剑突下可见心尖搏动。应首先考虑的诊断是()
A.冠心病
B.高血压性心脏病
C.风湿性心脏病
D.肺源性心脏病
E.心肌炎
—Do you know the first ladies of China and the USA had________ interview on March 21?
—Yes. And it was ________ great success.
A.an; /
B.the; a
C.an; a
D.the; /