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【单选题】
More and more, the operations of our businesses, governments, and financial institutions are controlled by information that exists only inside computer memories. Anyone clever enough to modify this information for his own purposes can reap big reward. Even worse, a number of people who have done this and been caught at it have managed to get away without punishment. It’s easy for computer crimes to go undetected if no one checks up on what the computer is doing. But even if the crime is detected, the criminal may walk away not only unpunished but with a glowing recommendation from his former employers. Of course, we have no statistics on crimes that go undetected. But it’s disturbing to note how many of the crimes we do know about were detected by accident, not by systematic inspections or other security procedures. The computer criminals who have been caught may have been the victims of uncommonly bad luck. Unlike other lawbreakers, who must leave the country, commit suicide, or go to jail, computer criminals sometimes escape punishment, demanding not only that they not be charged but that they be given good recommendations and perhaps other benefits. All too often, their demands have been met. Why? Because company executives are afraid of the bad publicity that would result if the public found out that their computer had been misused. They hesitate at the thought of a criminal boasting in open court of how he juggled the most confidential records right under the noses of the company’s executives, accountants, and security staff. And so another computer criminal departs with just the recommendations he needs to continue his crimes elsewhere.1.It can be concluded from the passage that _____.
A.
it is still impossible to detect computer crimes today
B.
people commit computer crimes at the request of their company
C.
computer criminals escape punishment because they can’t be detected
D.
computer crimes are the most serious problem in the operation of financial institutions
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参考答案:
举一反三
【简答题】举例说明自发突变和诱发突变、正突变和反突变。
【单选题】下面代码的输出结果是‪‪‪‪‪‪‫‪‪‪‪‪‪‪‪‪‪‪‫‫‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‪:
A.
[22,33,44]
B.
[33,44,55]
C.
[44,55]
D.
[11,33,55]
【单选题】十进制数39转换成二进制整数是
A.
100011
B.
100101
C.
100111
D.
100001
【单选题】下面代码的输出结果是‪‪‪‪‪‪‫‪‪‪‪‪‪‪‪‪‪‪‫‫‪‪‪‪‪‪‪‪‪‪‪‫‪‪‪‪‪‪:
A.
10,10
B.
20
C.
10
D.
100
【简答题】说明自发突变和诱发突变、正突变和反突变、显性突变和隐性突变的含义。
【单选题】IF函数根据指定的条件来判断其"真"(TRUE)、"假"(FALSE),根据逻辑计算的真假值,从而返回相应的内容。判断A1单元格中数据:当A1>=60,显示“及格”;当A1<60,显示“不及格”。下面选项正确的是( )。
A.
if(A1>=60,”不及格”,”及格”)
B.
if(“A1>=60”,”不及格”,”及格”)
C.
if(A1>=60,”及格”,”不及格”)
D.
if(“A1>=60”,”及格”,”不及格”)
【单选题】十进制数 39 转换成无符号二进制整数是:
A.
100011
B.
100101
C.
100111
D.
101001
【单选题】某公司生产3种产品(产品A、产品B和产品C),由部件1、部件2、部件3、部件4和部件5组成。如下图所示规划求解模型,现假定已经正确计算出G3:G7单元格区域数据及G9总利润数据,选择“数据”/“规划求解”工具,在规划求解对话框中,G9单元格目标单元格以及通过更改可变单元格的区域已经正确设置,使得G9获得的总利润最大,下列约束条件正确的是( )。 a. b. c. d.
A.
a
B.
b
C.
c
D.
d
【单选题】最早提出旋转钻井的人是( )。
A.
达.芬奇
B.
贝特
C.
斯威尼
D.
查普曼
【单选题】最早提出旋转钻井的人是( )。
A.
达 – 芬奇
B.
贝特
C.
斯维尼
D.
查普曼
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