When you work with a computer, it leaves some useful error messages or window(66)to help you with your work.
A．hints
B．prompts
C．introductions
D．guides
第1题：
He needs_______ (you) help．
第2题：
A.SHOW_WINDOW
B.RESIZE_WINDOW
C.DISPLAY_WINDOW
D.MOVE_WINDOW_X_Y
E.WINDOW_VISIBLE_X_Y
第3题：
___________
[A] signs
[B] stimuli
[C] messages
[D] impulses
第4题：
假定p指向的字符串为”leaves”,则cout＜＜p+2的输出结果是【 】
A．a
B．aves
C．eaves
D．leaves
第5题：
Why do you want a new job ______you've got such a good one already?
A. that
B. where
C. which
D. when
17．答案为D。为什么你已经有个好工作，还要找新工作?分析整句结构，从句做状语，只有 D为正确选项。
第6题：
A.trust
B.believe
C.confirm
D.help
第7题：
Signs can carry as many _________ as words.
A.questions B.examples C.tears and smiles D.messages
第8题：
●In the following essay，each blank has four choices．Choose the best answer and write down on the answer sheet．
Spread spectrum simply means that data is sent in (66) pieces over a number of the discrete frequencies available for use at any time in the specified range．Devices using (67) spread spectrum(DSSS)communicate by splitting each (68) of data into several parts and sending them concurrently on different (69) ,DSSS uses a lot of the available (70) ，about 22 megahertz(MHz)．
(66) A．small
B．high
C．low
D．long
(67) A．direct-sequence
B．discrete-sequence
C．duplicate-sequence
D．dedicate-sequence
(68) A．data
B．byte
C．packet
D．bit
(69) A．bits
B．frequencies
C．packets
D．messages
(70) A．rate
B．velocity
C．bandwidth
D．period
第9题：
49．—What about some drinks?
—__________．
A． Help， yourself
B． Good idea
C． You're welcome
D． Me，too
第10题：
下面的命令可以实现只能往/var/log/messages里面追加数据，但不能删除的功能。 chattr +a /var/log/messages