患者女性，18岁，因“右侧腰背部疼痛20日”来诊。患者于20日前无诱因出现右侧腰背部疼痛，性质为钝痛，较剧烈，伴尿频、尿急、尿痛及发热，无排尿中断及肉眼血尿。外院给予抗感染、对症治疗后腰背部疼痛缓解。近5日再次出现腰背部疼痛，并伴有肉眼血尿多次，无明显尿痛。查体：体温36.4℃，脉搏80次/分，呼吸20次/分，血压110/70mmHg（1mmHg=0.133kPa）；彩色多普勒超声：右肾脓肿可能，尿液分析未见明显异常。尿培养为大肠埃希菌（产超广谱β内酰胺酶）。诊断：右肾周脓肿，泌尿系感染。

ESBL是指细菌对抗菌药产生的一种耐药酶，该酶是（）

A.头孢菌素酶

B.超广谱β内酰胺酶

C.碳青霉烯酶

D.青霉素酶

E.氨基糖苷钝化酶

The nurse is providing postoperative care for a client recovering from abdominal surgery. The client is receiving morphine through a client-controlled analgesia pump. Which finding would indicate that the client is obtaining adequate pain relief（）

A. Awakening several times during the night to redose.

B. Respiratory rate of 10 breaths/minute.

C. Pain rating of 2 or 3 on a scale of 0 to 10.

D. Complaint of itching as an adverse effect of the analgesia.