院内感染所致肺部感染最常见的病原体是()
A.病毒
B.支原体
C.革兰氏阴性杆菌
D.原虫
E.革兰氏阳性球菌
参考答案:C
The man we followed suddenly stopped and looked as if ________ whether he was going in the right
direction.[ ]
A.seeing
B.having seen
C.to see
D.to have sen
患者男性50岁,右上颌结节传导阻滞麻醉后4天出现发热,右侧面深部疼痛,张口受限,右下颌升支后缘压痛,此患者可能发生了
A.翼下颌间隙感染
B.咬肌间隙感染
C.颞下间隙感染
D.颞间隙感染
E.翼内肌痉挛