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【单选题】
实体类型Employee(职员)定义如下 public class Employee { public int id {get;set;} //编号 public string ename {get;set;} //姓名 public int age {get;set;} //年龄 public Department department {get;set;} //部门 } 实体类型Department(部门)定义如下 public class Department{ public int id {get;set;} //编号 public string dname {get;set;} //部门名称 public ICollection employees {get;set;} //职员 } 已知有Employee类的实体对象列表EmployeeList和Department类的实体对象列表DepartmentList,以下说法正确的是:A.
Department类中的employees属性是引用属性,不是导航属性
B.
Employee类中的department属性是引用属性,不是导航属性
C.
Department类定义中没有导航属性
D.
Employee类定义中没有引用属性
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举一反三
【单选题】A: Could you install this equipment for me B: ______
A.
Come on, don"t you see I"m busy now
B.
Unless you can help me with my computer.
C.
It"s very heavy. It"ll be OK if you can find another hand.
D.
If I were you, I would do it myself.
【单选题】The word 'considered' in paragraph 5 could be best replaced by ______
A.
thought.
B.
rated.
C.
regarded.
D.
belceved.
【单选题】. 1931 was the year ________ a German company began to make the first tape recorders, _______ could record and play sounds on a tape wound around a round object.
A.
that ---Which
B.
which --- That
C.
when---which
D.
when--- that
【简答题】暴饮暴食或酗酒最易引起的急腹症是什么?
【单选题】—M r Smith, would you please speak a little more ________? —Sorry ! I thought you could follow me.
A.
quietly
B.
quickly
C.
slowly
D.
politely
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