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【单选题】
有关Word 2010的分页功能,下面说法错误的是( )。
A.
Word文档除了自动分页外,也可以人工分页
B.
当文档满一页时系统会自动换一新页,并在文档中插入一个硬分页符
C.
我们可以通过Ctrl+Enter组合键开始新的一页
D.
在草稿视图下,分页一条虚线,按Delete键可以将人工分页符删除
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参考答案:
举一反三
【单选题】夜间看手机,眼干涩酸痛,睁眼困难的原因是
A.
外直肌运动过度
B.
瞳孔括约肌收缩过度,泪膜蒸发
C.
房水在视疲劳时分泌过快,睫状突疲劳
D.
晶状体收缩,房水分泌量减少
E.
睫状肌运动过度,房水分泌量减少
【单选题】设U是某关系模式的所有属性的集合,X、Y、Z都是U的子集,且Z=U-X-Y。下面关于多值依赖的叙述中,不正确的是( )。
A.
若X→→Y,则X→→Z
B.
若X→Y,则X→→Y
C.
若X→→Y,且Y' Í Y,则X→→Y'
D.
若Z=Ф,则X→→Y
【单选题】设 A 、 B 集合 , 若 A={ Ф } , B={ Ф , { Ф }} , 则正确的是
A.
A B 且 A B
B.
A B 且 A B
C.
A B 且 A B
D.
A B 且 A B
【单选题】设U是所有属性的集合,X、Y、Z都是U的子集,且Z=U—X—Y。下面关于多值依赖的叙述中,_______是不正确的。
A.
若X→→Y,则X→→Z
B.
若X→Y,则X→→Y
C.
若X→→Y,且Y’∈Y,则X→→Y’
D.
若Z=Ф, 则X→→Y
【单选题】The General Rule of Multiplication is used to compute:
A.
subjective probabilities.
B.
the probability of two or more mutually exclusive events.
C.
the probability of two or more dependent events.
D.
the probability of two or more independent events.
【单选题】The General Rule of Multiplication is used to compute:
A.
the probability of two or more dependent events.
B.
the probability of two or more independent events.
C.
the probability of two or more mutually exclusive events.
D.
subjective probabilities.
【单选题】The General Rule of Addition is used to compute:
A.
subjective probabilities.
B.
the probability of two or more independent events.
C.
the probability of two or more collectively exhaustive events.
D.
the probability of two events, which are not mutually exclusive.
【单选题】清洁生产行业标准分 几 级?
A.
1
B.
2
C.
3
D.
4
【单选题】设U是所有属性的集合,X、Y、z都是U的子集,且=U-X-Y。下列关于多值依赖的叙述中,哪一条是不正确的?
A.
若X→→Y则X→→Z
B.
若X→Y,则X→→Y
C.
若X→→Y,且Y' Y,则X→→Y'
D.
若Z=Ф,则X→→Y
【单选题】The General Rule of Addition is used to compute:
A.
the probability of two or more independent events.
B.
the probability of two or more collectively exhaustive events.
C.
the probability of two events, which are not mutually exclusive.
D.
subjective probabilities.
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