感染动物后引起母畜流产的病原菌是()
A.布氏杆菌
B.大肠杆菌
C.炭疽杆菌
D.空肠弯曲菌
E.金黄色葡萄球菌
参考答案:A
溺水的并发症包括 ()
A.电解质紊乱
B.脑水肿
C.肺水肿
D.心力衰竭
E.感染
I tried to work on, but I was so tired that I could no longer _____ .
A.bear out
B.hold on
C.hold up
D.work out