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运营指挥分为一级、二级二个指挥层级。值班站长、信号楼调度属于 指挥。 A. 二级
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举一反三
【简答题】Henry had studied in a university before he came back to his hometown. He thought he had lots of knowledge and he was supercilious(目中无人). At first he was easily given a job in a bank. But he couldn,t ...
【简答题】B. Rewrite the following sentences after the models, using the structure “remember doing something” or “remember to do something”, according to the meaning of the sentence. Model 1: Do you remember th...
【简答题】I dropped out of Reed College after the first 6 months, but then stayed around as a drop-in (旁听生)   for another l8 months or so before I really quit. So why did I drop out? It started before I was bor...
【单选题】He is Tom Hand. His __________ is Tom. [     ]
A.
first name
B.
family name
C.
last name
D.
school name
【单选题】下列关于触发器优点的描述,错误的是( )
A.
触发器是自动执行的
B.
触发器可以实现对数据库中的相关表的级联更改
C.
强化完整性约束
D.
提高数据的检索速度
【单选题】Oh, come on, Tom! It’s time __________.
A.
to school    
B.
for class     
C.
to go school
【简答题】It was Tom’s first visit to England, and he was looking forward to his first journey, on London’s Underground Railway. And against his friends’ 1_____, he was determined to travel 2 _____. He entered ...
【简答题】After reading Text B, decide which sences are true (T) and which sentences are false (F). ( ) Daniel would go to France by plane in a few hours with his father. ( ) Before Daniel wen...
【简答题】Differen t coun tries and different people have different manners. We must find out their customs, so that they will not think us ill-mannered. Here are some examples of the things that a well-mannere...
【单选题】下列关于触发器优点的描述,错误的是( )
A.
提高数据的检索速度
B.
强化完整性约束
C.
触发器是自动执行的
D.
触发器可以实现对数据库中的相关表的级联更改
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