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【简答题】
“probabilistic"意思是?
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皮皮学刷刷变学霸
举一反三
【单选题】A group of mice was released into a large field to which no other mice had access. Immediately after the release, a representative sample of the mice was captured, and the fur color of each individual...
A.
The allele for gray fur color is unstable, and over twenty years most of those alleles mutated to become alleles for black fur.
B.
The field was composed primarily of light-colored soil and little vegetation, affording gray mice protection from predators.
C.
Sexual selection led to increased mating frequency of black and brown versus gray and brown.
D.
The gray mice were hardest to capture and so were underrepresented in the twenty-year sample.
【单选题】如图所示,为Y-△降压起动电路,若与KT线圈串联的常闭辅助触点因故不闭合,其他均正常,则在合上QS三相电源开关,按下SB2后,电动机会______。
A.
电动机只能Y起动和运转
B.
电机仍能Y降压起动，△运转
C.
电机△起动，Y运转
D.
FU4、FU5熔断
【简答题】提出'教育即生活'、'教育即生长'的教育家是（ ）。
【简答题】杜威提出教育即生长 、教育即生活 、( )。
【简答题】一个完整的数字博物馆至少包括: 1 2 3
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