维护检查结束后，应对现场进行清理和检查，不得将（）遗留下跑道或滑行道上。

阅读理解。

     Paris has a beautiful name, the City of Lights. Do you know what it means? Many beautiful buildings

are lighted (照亮) at night. The streets are very bright. When you drive in Paris, you must not turn on

your headlights (汽车前灯) even after dark.

     Paris is full of life all day and all night. But this is not the only reason for its beautiful name. For

hundreds of years, Paris has been the centre (中心) of science (科学) and art (艺术).

     Many scientists (科学家) and artists (艺术家) have come to study here. For this reason also, people

call it the City of Lights.

1. Paris is the capital (首都)of _____.

A. America      

B. Japan        

C. France        

D. China

2. The streets are very bright at night because (因为) _____.

A. you turn on your headlights    

B. it's in the day

C. many buildings are lighted      

D. it's beautiful

3. The City of Lights means(意思是) _____.

A. the streets are very bright            

B. Paris is full of life all day and all night

C. Paris is the centre of science and art    

D. both B and C

4. Which of the following is right?

A. There are many cars in Paris.    

B. Paris is a beautiful name of a girl.

C. Paris is dark at night.          

D. Many people like coming to Paris.

5. What does"study"mean?

A. 写生        

B. 学习        

C. 打猎        

D. 发明

关于糖尿病酮症酸中毒时，钾代谢紊乱的描述中，哪项是正确的（）

A.如诱因为胃肠功能紊乱，可因呕吐、腹泻丢钾

B.酮症后可因进食减少、呕吐致低钾

C.糖尿病加重后因渗透性利尿而排钾

D.酸中毒，使钾向细胞内转移

E.胰岛素治疗后使钾向细胞内转移

三个实心正方体对水平地面的压强相等，它们的密度分别为ρ₁、ρ₂、ρ₃，且ρ₁＜ρ₂＜ρ₃，现从它们的上表面分别均匀地削去一层，削去的厚度分别为h₁、h₂、h₃．为了使削去之后它们对水平地面的压强仍相等，应该有（　　）

A．h₁＜h₂＜h₃

B．h₁＞h₂＞h₃

C．h₁=h₂=h₃

D．无法确定

下列关于企业内部负责会计信息化工作的主体的表述中，不正确的是（）

A.小微企业应当指定会计部门或者会计人员负责会计信息化工作，不能将会计信息化工作外包

B.大中型企业可以在会计部门内部设立专门机构或者岗位负责会计信息化工作

C.大中型企业可以在信息技术部门内部设立专门机构或者岗位负责会计信息化工作

D.大中型企业可以设置独立部门专门负责会计信息化工作

外科感染演变的结局不包括（）。

A.局限化

B.形成脓肿

C.慢性感染

D.感染扩散

E.形成肉芽肿