咯血伴皮肤黏膜出血,在下列疾病中不常见的是()
A.肺癌并纵隔淋巴结侵犯
B.血液病
C.出血型钩体病
D.风湿热
E.流行性出血热
参考答案:A
William Byrd was the owner of the largest library in colonial ______.
A.period
B.time
C.times
D.periods
"设计基准期"和"设计使用年限"如何区别?