根据《处方管理办法》，医疗机构处方保存期限为3年的有 A．医疗用毒性药品处方 B．儿

读短文，用所给动词的适当形式填空。

     Last Sunday, the Class One Grade Nine students went to the park. They 1_____ (see) many beautiful

fish there. They also saw the sharks. Then they 2_____ (go) to the zoo near the park. Of all the animals,

the monkeys are the most funny, and they are always 3_____ (make) a lot of noise. At noon the students

4_____ (have) a picnic in the zoo. Then they took a bus back to school. After they got to school, Mr Lee

found he 5_____ (leave) his backpack at home.

并未将税收负担转移给他人的税负转嫁形式是（）。

A.前转

B.后转

C.消转

D.税收资本化

病历摘要：男性患者，24岁，鼻衄6天，发热、咳嗽、胸痛3天来院就诊。实验室检查：血红蛋白：50g/L，红细胞：1.6×10¹²/L，白细胞：8×10⁹/L分类计数发现原始和早幼粒细胞。

常选择穿刺的有哪些部位？（）提示：为进一步确诊，医嘱：骨髓穿刺术

A.髂前上棘穿刺点

B.髂后上棘穿刺点

C.胸骨穿刺点

D.腰椎棘穿刺点

E.腰椎间穿刺点

F.骶骨穿刺点

瀑布模型适合于( )。

A．小型软件系统开发

B．中型软件系统开发

C．大型软件系统开发

D．小、中、大型软件系统开发

公安工作的根本原则是( )

A．坚持党对公安工作的绝对领导
B．坚持党政分开原则
C．坚持群众路线
D．坚持社会治安综合治理