gravity separation
use of adsorbents
use of flocculents
use of chemical addition
第1题：
A、average method
B、LIFO method
C、FIFO method
D、can not tell without more information
第2题：
A.RSH
B.SNMP
C.FTP
D.TELNET
第3题：
●Which of the following statements about object oriented database is not correct? (72) ．
(72) A．Each object has a unique object identify in the system
B．Encapsulation and inheritance are two important features of object oriented database
C．A subclass can inherit the attributes and methods of all its superclasses
D．A supereloss includes the attributes and methods at all subclasses
第4题：
Which of the following methods effectively removes data from a hard drive prior to disposal？（）
第5题：
Which of the following methods of user authentication is the MOST secure？（）
第6题：
Which of the following statements about object oriented databse is not correct?
A． Each object has a unique object identity in the system.
B．Encapsulation and inheritance are two important features of object oriented databasE.
C．A subclass can inherit the attributes and methods of all its superclasses.
D．A subclass includes the attributes and methods of all its subclasses.
第7题：
Which of the following is true according to the passage?
[A] Flu vaccines now mainly use egg-based technology.
[B] A bird influenza has once circulated among humans.
[C] Safety can be greatly improved with cell-culture vaccines.
[D] Modern vaccine production methods are to replace egg-based methods.
第8题：
Which one of the following is not an acquisition method?
A advertising
B invitation
C negotiation
D purchase
E all are acquisition methods
第9题：
Which of the following methods can move files in clear text and can be easily intercepted?（）
第10题：
Which of the following methods can be used to apply a file system to a hard drive partition?（）