Which methods from the String and StringBuffer classes modify the object on which they are called？（）
第1题：
There are four methods of government procurement. Which is not one of these methods?
A Assistance
B Sealed bidding
C Competitive proposals
D Acquisition
E Small purchases
第2题：
第3题：
Which of the following scheduling methods uses more of the risk management concepts:
A ADM
B PDM
C CPM
D PERT
E Gantt
第4题：
Which of the following archiving methods only backs up data that has changed since the previous full backup?（）
第5题：
Which of the following methods of user authentication is the MOST secure？（）
第6题：
161 There are four methods of government procurement. Which is not one of these methods? A. Assistance
B. Sealed bidding
C. Competitive proposals
D. Acquisition
E. Small purchases
第7题：
Which two wireless encryption methods are based on the RC4 encryption algorithm? （）
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 routing protocols uses AS-Path as one of the methods to build the routing table?（）