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【单选题】
下列说法错误的是( )A.
为保证Linux文件系统的安全,把口令保存到只有超级用户才能读取/etc/shadow文件中
B.
在shadow文件中,每定义一个用户信息,行中各字段用“:”隔开
C.
进一步提高系统的安全性,shadow文件中保存的是已经加密的口令
D.
passwd 是一个文本文件,用于定义系统的用户账号,该文件位于“/bin”目录下
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皮皮学刷刷变学霸
举一反三
【简答题】PDCA 循环的四个阶段, P ( )阶段、 D ( )阶段、 C ( )阶段、 A ( )阶段
【单选题】Why do men and women have different emotional and rational processes?
A.
born with different genetic tendencies
B.
influenced by social norms
C.
both nature and nurture
D.
masculine or feminine
【单选题】Why do men and women have different patterns of abilities?
A.
Because they have different overall levels of intelce,
B.
Because their genetic materials are different.
C.
Because hormonal influences are different on their developing brains.
D.
Because they differ in physical attributes.
【单选题】Why do men and women share household tasks?
A.
Because women play an equal role as men.
B.
Because women play a dominant role in the family.
C.
Because women have less time to spend on housework.
D.
Because men spend more time on housework.
【简答题】请快速完成下列各数的数制转换: 十六进制:0x9B 对应的二进制数为: 十六进制:0xC8 对应的二进制数为: 十六进制:0xDA 对应的二进制数为:
【简答题】完成下列各种进制数的转换。 (33) 10 =(21) 16 =( ) 2 =( ) 8421BCD (B2) 16 =(178) 10 =( ) 2 =( ) 8421BCD (52) 10 =(34) 16 =( ) 2 =( ) 8421BCD ( ) 2 =( ) 8421BCD =(102) 10
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