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【单选题】
TCP/IP把网络通信分为5层,属于应用层的是( )。
A.
IP(Internet协议)
B.
TCP(传输控制协议)
C.
NFS(网络文件系统)
D.
UDP(用户数据报协议)
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【单选题】[Para 4] Most important of all, I learned what to do to prevent getting chigger bites in the future. Mainly, of course, stay out of the woods in the summertime. But if the temptation is too great on a...
A.
Paragraph 4 contains an irrelevant sentence.
B.
Paragraph 4 lacks supporting details at one key spot.
C.
Paragraph 4 lacks transitional words.
D.
Paragraph 4 contains a run-on and a fragment.
【简答题】    7.Complete the sentences with suitable words from the groups of synonymous verbs. The “verb + noun” collocations help distinguish synonymous verbs. Let's take the group of synonymous verbs “ab...
【单选题】If the shirt is too large,the tailor can _______it to fit you.
A.
change
B.
alter
C.
transfrom
D.
make
【判断题】航天是指载人或不载人飞行器在大气层中的航行活动。
A.
正确
B.
错误
【简答题】Directions: use the expressions in the Functional language box, or you may come up with your own ones. After you complete the conversation, please act it out. A: I’ve read that some people love living...
【多选题】If a T-shirt does not fit you, you can say:
A.
It's too tight on me.
B.
I prefer a V-neck T-shirt.
C.
It's too loose on me.
D.
The material is 100% pure cotton.
【单选题】 The ability of an antibody that binds to blood group antigen and also reacts with some Escherichia coli bacteria is an example of
A.
Transfusion reaction
B.
Autoimmunity
C.
Passive immunity
D.
Cross-reactivity
E.
None of the above
【简答题】某企业的E-R图中,职工实体的属性有:职工号、姓名、性别,出生日期,电话和所在部门,其中职工号为实体标识符,电话为多值属性,离退休职工所在部门为离退办.在逻辑设计阶段.应将职工号和电话单独构造一个关系模式.该关系模式为( );因为离退休职工不参与企业的绝大部分业务.应将这部分职工独立建立一个离退休职工关系模式,这种处理方式成为( )。 A.1NF B.2NF C.3NF D.4NF A.水平分解 ...
【简答题】假设描述职工信息的属性有:职工号、姓名、性别和出生日期;描述部门信息的属性有:部门号、部门名称和办公地点。一个部门有多个职工,每个职工只能在一个部门工作;一个部门只能有一个部门经理,部门经理应该为本部门的职工,取值为职工号。则在设计E-R图时,应将职工和部门作为实体,部门和职工之间的工作联系是( ),要描述部门经理与部门之间的任职联系,应采用( )。由该E-R图转换并优化后的关系模式为( )。 A...
【判断题】航天是指载人或不载人飞行器在大气层中的航行活动。
A.
正确
B.
错误
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