病历摘要：患者男性，56岁，阵发性左腰痛3天，伴发热、尿量减少。既往有“双肾结石”病

男性，28岁。左侧阴囊内肿块半年，时有挤压痛。查体：左侧阴囊肿大，触之睾丸上部有一囊性肿块，牵拉睾丸可随之活动，挤压不变小，睾丸正常大小。透光试验阳性。诊断首先考虑（）。

A.睾丸鞘膜积液

B.精索鞘膜积液

C.交通性鞘膜积液

D.左侧斜疝

E.精液囊肿

属于革兰阴性厌氧菌的是

A．厌氧消化球菌
B．厌氧消化链球菌
C．小韦荣球菌、
D．双歧杆菌
E．产气荚膜梭菌

加油站摆放供应商提供的陈列架必须得到公司的许可并遵从公司的指引摆放在指定的位置。

A client who has been using crutches at home for t week reports that he is having trouble using the crutches because his armpits hurt and his fingers tingle. What would be the nurse’s most appropriate response（）

A. "You need to do more arm exercises. It sounds like your muscles need strengthening. "

B. "That’s normal. As you adjust to the crutches, the discomfort will diminish. "

C. "Be sure to take your pain medication before ambulating. That will help your discomfort. "

D. "Let me watch you ambulate. Your crutches or technique may need some adjustment. "

什么叫做燃气的理论空气量？