题目内容
（请给出正确答案）
[多选题]
下列关于数据仓库中的数据描述，正确的有()。
A.元数据是描述数据仓库内部数据结构的数据
B.可以从原有数据库系统中抽取而来
C.都是独立系统的静态数据
D.反映用户数据历史上的变化情况
E.不能从原有数据库系统中直接得到
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A.automatically controlled
B.off power
C.continuously manned
D.continuously unmanned
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When under maneuvering conditions with the machinery being manually operated the control unit or console should be（)
第2题
When we use the classical Ornut-Cochrane procedure, under suitable conditions, the estimator is more efficient than OLS estimator.
第3题
The fatigue failures have occurred under such conditions when the stresses developed were below the
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第4题
A bathing-woman's job was to ______.A．attend to the bathing machineB．dip the attendantC．fo
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A．attend to the bathing machine
B．dip the attendant
C．force the bather to emerge from the bathing machine
D．force the bather under the water when she came out of the machine
第5题
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A. attend to the bathing machine
B. dip the attendant
C. force the bather to emerge from the bathing machine
D. force the bather under the water when she came out of the machine
第6题
Which would qualify as a dominant allele of a gene？
A、an allele that confers a phenotype on the organism when heterozygous; that is, when present in only one copy
B、an allele that confers a phenotype only when both copies of the gene are mutant; that is, when homozygous
C、an allele that is commonly found in wild populations, as opposed to alleles found in laboratory strains or when a pathological condition is present
D、an allele that confers a normal phenotype under some conditions, but confers a different, mutant phenotype when conditions such as elevated temperature are present
第7题
Experiments have to be made under carefully _____ conditions .A.treatedB.suppliedC.re
Experiments have to be made under carefully _____ conditions .
A.treated
B.supplied
C.related
D.controlled
第8题
Accordingtothefifthparagraph,underwhatconditionsarealgaeabletousesolarenergytomakehydrogen
According to the fifth paragraph, under what conditions are algae able to use solar energy to make hydrogen？ _______A When there is a lot of oxygen in the air.B When there is no oxygen in the air.C When photosynthesis is taking place.D When enough starch is stored.
第9题
If output more than doubles when all inputs are doubled, production is said to occur under conditions of
A、increasing returns to scale.
B、imperfect competition.
C、intra-industry trade.
D、inter-industry trade.
第10题
Under L／C operations，the bank will effect payment under the following conditions（
Under L/C operations，the bank will effect payment under the following conditions（）．
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