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【单选题】
以下关于子网掩码的说法,正确的是A.
利用子网掩码可以判断两台主机是否在同一个子网
B.
子网掩码代表 Internet 上每台主机的唯一编码
C.
子网掩码用于设定网络管理员的密码
D.
子网掩码的引入主要是为了方便记忆
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【简答题】Every man and every woman ______ (be)satisfied with the solution．
【单选题】There must be a time in every man's life ________. [ ]
A.
that he is in low spirits
B.
which he is in low spirits
C.
when he is in low spirits
D.
then he is in low spirits
【单选题】There comes a time in every man's life_____.
A.
that he needs to think
B.
when he has to think
C.
therefore he has to work hard
D.
then he will need it
【单选题】There comes a time in every man’s life ____________.
A.
then he has to think
B.
which he needs
C.
when he has to think
D.
therefore he has to work hard
【简答题】Passage There s a time in every man s education when he arrives at the conviction that envy is ignorance; that imitation is suicide; that he must take himself for better, for worse, as his portion. . ...
【单选题】There comes a time in every man's life ______.
A.
then he has to think about the future
B.
which he needs
C.
when he has to think about the future
D.
therefore he has to work hard
【单选题】以下关于流通加工理解不正确的是()
A.
加工对象是进入流通过程的商品，具有商品属性
B.
大多是复杂加工，是生产加工的延伸
C.
加工的目的在于完善商品使用价值
D.
又称物流加工，在物流操作系统中是一种可选择性的附带服务作业
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