皮皮学，免费搜题
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【单选题】
（ ）主要是在分布式计算环境中提供数据的保密性、完整性、用户身份鉴别和行为的不可抵赖等安全功能。A.
公钥基础设施
B.
特权管理基础设施
C.
网络基础设施
D.
DES 加密技术
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【简答题】A．Children are willing to accept the real violence in society. B．Children will become more and more kind. C．Children will not accept the violence in society. D．Children think they are just imaginary.
【简答题】Children who are over-protected by their parents maybecome _____. A. hurt B. spoiled C.damaged D. harmed
【单选题】已知刀具沿一直线方向加工的起点坐标为(X20,Z-10),终点坐标为(X10,Z20),则其程序是( )。
A.
G01 X20 Z-10 F100
B.
G01 X-10 Z20 F100
C.
G01 X10 W30 F100
D.
G01 U30 W-10 F100
【简答题】It’s ten ____________ walk to the bus stop. (minute)
【单选题】For the root of B_tree of order m,the minimal number of its children is
A.
2
B.
[m/2]
C.
[m/2]
D.
m
【单选题】It is said that a new school ___ in our town.
A.
is going to build
B.
is built
C.
will be built
D.
has been built
【简答题】It is a kind of equipment used for weighing things.
【简答题】A．Children are willing to accept the real violence in society. B．Children will become more and more kind. C．Children will not accept the violence in society. D．Children think they are just imaginary.
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