血源性肺脓肿最常见的病原菌是()。
A.肺炎球菌
B.金黄色葡萄球菌
C.真菌
D.革兰阴性杆菌
E.厌氧菌
参考答案:B
26岁初产妇,妊娠38周,规律宫缩7小时,枕右前位,估计胎儿体重2800g,胎心146次/分。 * * 检查:宫口开大3cm,未破膜,S=+1,骨盆外测量未见异常。
此后宫缩逐渐减弱,产程已17小时,胎膜已破,宫口开大7cm,此时恰当处理应是()
A.静脉滴注缩宫素
B.肌内注射缩宫素
C.静注地西泮加速产程进展
D.静脉注射麦角新碱
E.立即行剖宫产术
An exhibition of paintings ________ at the museum next week . [ ]
A. are to be held
B. are holding
C. is holding
D. is to be held