患儿,8岁。起病2天,发热39℃,微恶风,微汗出,咳嗽渐加剧,咳剧喘促,咳痰黄稠,咽红,舌质红,苔薄黄,听诊两肺闻及干啰音、右下肺少许细湿啰音。其诊断是()
A. 百日咳,痰火阻肺证
B. 感冒,风热感冒证,夹痰兼证
C. 咳嗽,痰热咳嗽证
D. 肺炎喘嗽,风热闭肺证
E. 哮喘,热性哮喘证
The gear, screw, and vane pumps are all classified as ().
A. variable stroke pumps
B. multistage pumps
C. positive displacement pumps
D. triple-ported pum
原始细胞CD41阳性的急性白血病属FAB分类的()
ALL-L2
B. ALL-M6
C. ALL-M3
D. ALL-M7
E. ALL-M4
显著性检验中不是犯α错误就是犯β错误。()
A. 正确
B. 错误