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【单选题】
从E-R图导出关系模式时,如果两实体间的联系是m:n,下列说法中正确的是( )A.
将m方码和联系的属性纳入n方的属性中
B.
将n方码和联系的属性纳入m方的属性中
C.
在m方属性和n方属性中均增加一个表示级别的属性
D.
增加一个关系，将m方和n方的码都纳入其中
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举一反三
【单选题】The author seems to suggest that ______.
A.
the attempt to grow the Judean palm date will end in failure
B.
the effort to reintroduce the Judean palm date is sure to pay off
C.
the researchers are likely to create a new species of the Judean palm date
D.
the researchers stand a chance of success to renew the Judean palm date
【简答题】A．To present his hands palm to palm. B．To extend his hand to his superior. C．To raise his hand above his head. D．To put his hand upon his chest.
【单选题】华为S3526以太网交换机的每个以太网端口都有指示灯用来指示端口的工作状态，如果绿灯亮，以下说法正确的是（）
A.
表示链路状态Up
B.
表示网络有环路产生
C.
表示端口速率工作在100Mbit/s
D.
表示链路状态Down
【判断题】Take a large amount of cleansing milk in the palm of your hand, rub the water and rub the foam.
A.
正确
B.
错误
【单选题】下列对划线处的比喻句解说错误的一项是:
A.
“如朝阳”写出了青年人的朝气蓬勃
B.
“如铁路”写出了青年人的刚正勇烈
C.
“如春前之草”写出了青年人的充满希望
D.
“如长江之初发源”写出了青年人的一往无前
【简答题】A．To present his hands palm to palm. B．To extend his hand to his superior. C．To raise his hand above his head. D．To put his hand upon his chest.
【简答题】A．To present his hands palm to palm. B．To extend his hand to his superior. C．To raise his hand above his head. D．To put his hand upon his chest.
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