已有堤防控制断面允许泄量应根据以下哪项来确定？（） A.要达到的设计泄量 B.历史上

短文填词（共10题小题，每小题1分，满分10分）

阅读下面短文，根据以下要求：1）汉语提示；2）首字母提示；3）语境提示, 在每个空格内填入一个适当的英语单词，所填单词要求意义准确.拼写正确。

Nowadays a lot of schools keep their students in school all day long.

Students have different o          about it.                                 小题1:                   

Some of the students think they enjoy l       freedom and have few       小题2:                

chances to get in touch with society. They are not able to fully         (培养)      小题3:               

their interests and      （爱好）. Therefore, they have least interest in their study小题4:                  

Some others think school is the best place to get knowledge,       they        小题5:                

should put their heart into their lessons. Some students          (缺少) the ability to 小题6:                

control themselves. Once       of school, they may lose control of themselves    小题7:                

and do something that will a        their studies.                          小题8:                

P     , there is no doubt that we should keep students at school.         小题9:                

But I think      of necessity that schools should organize various activities          小题10:                   

so that students can enjoy their school life.           

根据下列反应步骤，由2-丙醇转化为1，2-丙二醇（HOCH₂-CH₂OH-CH₃）的正确的反应类型的顺序是（　　）

A．消去-取代-加成

B．取代-消去-加成

C．消去-加成-水解

D．水解-取代-取代

焊缝表面检测可选用（）进行检测。

A、X射线

B、渗透

C、磁粉

下面关于数据库数据模型的说法中，哪一个是错误的

A．任何一张二维表都表示一个关系

B．层次模型的结构是一棵有向树

C．层次模型是网状模型的一种特例

D．在面向对象模型中每一个对象都有一个惟一的标识

根据《建设工程工程量清单计价规范》(GB 50500-2008)规定，楼地面整体面层工程量按设计图示尺寸以面积计算，不扣除( )。

A．间壁墙
B．室内铁道
C．构筑物
D．设备基础