下列与伤寒作鉴别诊断正确的是()
A.恶性组织细胞病
B.流行性斑疹伤寒
C.疟疾
D.革兰阴性杆菌败血症
E.急性风湿热
参考答案:A, B, C, D
Eugene's never willing to alter any of his opinions. It’s no use _____ with him.
A.to argue
B.arguing
C.argued
D.having argued
有机热载体锅炉及循环系统中积存有大量气体或水份时,其危害是()
A.影响传热
B.促进有机热载体分解
C.造成超温
D.造成喷油、着火