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【单选题】
下面有关URL的描述，哪个是不正确的（）A.
在互联网上，每一个网站有一个地址，这个地址通常被称为URL
B.
有时（并非总是这样），对某些资源的访问来说，需给出相应的服务器提供的端口号
C.
电子邮件地址不属于URL
D.
URL的一般格式为："协议名：//域名/目录名/文件名"
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举一反三
【单选题】断电后,下列有关半导体存储器的说法中,___是正确的
A.
RAM 的数据不会消失
B.
ROM 的数据不会消失
C.
EPROM 的数据会消失
D.
EEPROM 的数据会消失
【单选题】What did the monkeys do in the cave?broke everything.
A.
They
B.
They played games.
C.
They argued and fought.
【单选题】. What did the monkeys do in the cave?
A.
They broke everything.
B.
They argued and fought.
C.
They played games.
【单选题】Fido and Rex played in the park. ________ wanted to go home.
A.
None of the dogs
B.
Neither of the dog
C.
Neither dogs
D.
Neither dog
【简答题】我国最早采用班级授课制的是清政府于l862年设于北京的_____ 。
【单选题】What did the monkeys and apes want to find?
A.
a new river
B.
the river's source
C.
the ocean
【单选题】The owner and editor of the newspaper the conference.
A.
were attending
B.
were to attend
C.
is to attend
D.
are to attend
【单选题】What did the monkeys do in the cave?
A.
They broke everything
B.
They played games.
C.
They argued and fought.
【单选题】What did the monkeys and apes want to find?ocean's end
A.
the
B.
a new waterfall
C.
the river's source
【简答题】在数据库FORTA中,请先在表orders中添加一个新列amount,用来存放订单的总金额,并根据表orderitems计算每个订单的总金额填入amount列。然后请在表orderitems上创建触发器,以保证当orderitems表的数据发生变化时,能自动维护orders表中amount列值的准确性。具体要求如下: 1). 修改orders表添加新列amount的SQL语句; 2). 填入amo...
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