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【单选题】
______ I always felt I would pass the exam, I never thought I would get an
A.
While
B.
Unless
C.
If
D.
Until
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参考答案:
举一反三
【单选题】用来维护两个表之间的一致性关系的约束是( )。
A.
DEFAULT 约束
B.
FOREIGN KEY约束
C.
CHECK 约束
D.
UNIQUE 约束
【单选题】1Africa is a huge continent with many countries. 2Many different areas are carved out of this one continent. 3Some areas have mountains. 4Some have deserts. 5Some have forests. 6With all the different...
A.
Sentence 7
B.
Sentence 6
C.
Sentence 3
D.
Sentence 2
【简答题】【T7】 A.WITH B.BUT C.PROTECTION A.IT USUALLY GIVES INADEQUATE【T7】_______FROM THE WEATHER B.NOT ONLY IN SOME DEVELOPING COUNTRIES WHERE BICYCLES ARE MAJOR MEANS OF PEOPLE AND GOODS,【T8】______IN A FEW RI...
【简答题】【T7】 A.CONCERNED B.IN C.CONTRIBUTES A.DO THEIR JOBS【T7】______THEIR OWN WAY B.AS FAR AS INCREASING PRODUCTIVITY IS【T8】______ C.HOW MUCH EACH WORKER【T9】______TO THE PRODUCT IN RECENT YEARS MANY COUNTRIE...
【单选题】人类经历过5次信息技术革命,其中第一次是
A.
文字的使用
B.
语言的使用
C.
印刷术的发明
D.
电报,电话,广播和电视的使用
【简答题】根据所给的首字母填空(Unit4 Body Language 单元词汇) 1. As winter is a____ the weather is getting colder. 2. In some Asian countries s____ the head means “agreement”. 3. People now c___ over long distances by means o...
【单选题】SQLServer的6种约束中,用来维护两个表之间的一致性关系的约束是()。
A.
FOREIGNKEY约束
B.
CHECK约束
C.
UNIQUE约束
D.
DEFAULT约束
【单选题】In some East Asian countries, average income, as measured by real GDP per person, has recently grown at an average annual rate that implies output will double about every
A.
a.10 years.
B.
b.15 years.
C.
c.20 years.
D.
d.25 years.
【单选题】人类经历过5次信息技术革命,其中第一次是
A.
文字的使用
B.
语言的使用
C.
印刷术的使用
D.
电报,电话,广播和电视的使用
【单选题】第1腕掌关节属于鞍状关节,能支配拇指的屈、伸、收、展、对掌,请问第1腕掌关节的组成结构是?
A.
手舟骨与第1掌骨
B.
大多角骨与第1掌骨
C.
大多角骨、小多角骨与第1掌骨
D.
钩骨与第1掌骨
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